21 CFR 175.105: Adhesives.

(a) Adhesives may be safely used as components of articles intended for use in packaging, transporting, or holding food in accordance with the following prescribed conditions:

(1) The adhesive is prepared from one or more of the optional substances named in paragraph (c) of this section, subject to any prescribed limitations.

(2) The adhesive is either separated from the food by a functional barrier or used subject to the following additional limitations:

(i) In dry foods. The quantity of adhesive that contacts packaged dry food shall not exceed the limits of good manufacturing practice.

(ii) In fatty and aqueous foods. (a) The quantity of adhesive that contacts packaged fatty and aqueous foods shall not exceed the trace amount at seams and at the edge exposure between packaging laminates that may occur within the limits of good manufacturing practice.

(b) Under normal conditions of use the packaging seams or laminates will remain firmly bonded without visible separation.

(b) To assure safe usage of adhesives, the label of the finished adhesive container shall bear the statement “food-packaging adhesive”.

(c) Subject to any limitation prescribed in this section and in any other regulation promulgated under section 409 of the Act which prescribes safe conditions of use for substances that may be employed as constituents of adhesives, the optional substances used in the formulation of adhesives may include the following:

(1) Substances generally recognized as safe for use in food or food packaging.

(2) Substances permitted for use in adhesives by prior sanction or approval and employed under the specific conditions of use prescribed by such sanction or approval.

(3) Flavoring substances permitted for use in food by regulations in this part, provided that such flavoring substances are volatilized from the adhesives during the packaging fabrication process.

(4) Color additives approved for use in food.

(5) Substances permitted for use in adhesives by other regulations in this subchapter and substances named in this subparagraph: Provided, however, That any substance named in this paragraph and covered by a specific regulation in this subchapter, must meet any specifications in such regulation.

Substances Limitations

Abietic acid

Acetone

Acetone-formaldehyde condensate (CAS Reg. No. 25619-09-4)

Acetone-urea-formaldehyde resin

N-Acetyl ethanolamine

Acetyl tributyl citrate

Acetyl triethyl citrate

2-Acrylamido-2-methyl-propanesulfonic acid, homopolymer, sodium salt (CAS Reg. No. 35641-59-9)

Albumin, blood

(2-Alkenyl) succinic anhydrides in which the alkenyl groups are derived from olefins which contain not less than 78 percent C30 and higher groups (CAS Reg. No. 70983-55-0)

4-[2-[2-2-(Alkoxy (C12-C15) ethoxy) ethoxy]ethyl] disodium sulfosuccinate

1-Alkyl (C6-C18) amino-3-amino-propane monoacetate

Alkylated (C4 and/or C8) phenols

Alkyl (C7-C12) benzene

Alkyl (C10-C20) dimethylbenzyl ammonium chloride

n-Alkyl(C12, C14, C16, or C18) dimethyl (ethylbenzyl) ammonium cyclohexylsulfamate For use as preservative only.

Alkyl ketene dimers as described in § 176.120 of this chapter

Alkyl (C7-C12) naphthalene

alpha Olefin sulfonate [alkyl group is in the range of C10-C18 with not less than 50 percent C14-C16], ammonium, calcium, magnesium, potassium, and sodium salts

2-[(2-aminoethyl)amino]ethanol (CAS Reg. No. 111-41-1)

3-Aminopropanediol For use only in the preparation of polyurethane resins.

Aluminum

Aluminum acetate

Aluminum di(2-ethylhexoate)

Aluminum potassium silicate

N-β-Aminoethyl-gamma-aminopropyl trimethoxysilane

3-(Aminomethyl)-3,5,5-trimethylcyclohexylamine

Aminomethylpropanol

Ammonium benzoate For use as preservative only.

Ammonium bifluoride For use only as bonding agent for aluminum foil, stabilizer or preservative. Total fluoride from all sources not to exceed 1 percent by weight of the finished adhesive.

Ammonium borate

Ammonium citrate

Ammonium persulfate

Ammonium polyacrylate

Ammonium potassium hydrogen phosphate

Ammonium silico-fluoride For use only as bonding agent for aluminum foil, stabilizer, or preservative. Total fluoride from all sources not to exceed 1 percent by weight of the finished adhesive.

Ammonium sulfamate

Ammonium thiocyanate

Ammonium thiosulfate

Amyl acetate

Anhydroenneaheptitol

Animal glue as described in § 178.3120 of this chapter

2-Anthraquinone sulfonic acid, sodium salt For use only as polymerization-control agent.

Antimony oxide

Asbestos

Asphalt, paraffinic and naphthenic

Azelaic acid

Azo-bis-isobutyronitrile

Balata rubber

Barium acetate

Barium peroxide

Barium sulfate

Bentonite

Benzene (benzol)

1,4-Benzenedicarboxylic acid, bis[2-(1,1-dimethylethyl)-6-[[3-(1,1-dimethylethyl)-2-hydroxy-5-methylphenyl]methyl]-4-methyl-phenyl]ester (CAS Reg. No. 57569-40-1) For use as a stabilizer.

1,2-Benzisothiazolin-3-one (CAS Registry No. 2634-33-5) For use as preservative only.

Benzothiazyldisulfide

p-Benzoxyphenol For use as preservative only.

Benzoyl peroxide

Benzyl alcohol

Benzyl benzoate

Benzyl bromoacetate For use as preservative only.

p-Benzyloxyphenol Do.

BHA (butylated hydroxyanisole)

BHT (butylated hydroxytoluene)

Bicyclo[2.2.1]hept-2-ene-6-methyl acrylate

2-Biphenyl diphenyl phosphate

Bis(benzoate-O)(2-propanolato)aluminum (CAS Reg. No. 105442-85-1) For use only as a reactant in the preparation of polyester resins.

1,2-Bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyl)hy-drazine (CAS Reg. No. 32687-78-8) For use at a level not to exceed 2 percent by weight of the adhesive.

1,3-Bis(2-benzothiazolylmercaptomethyl) urea

4,4′-Bis(α,α-dimethylbenzyl)diphenylamine

2,6-Bis(1,1-dimethylethyl)-4-(1-methylpropyl)phenol (CAS Reg. No. 17540-75-9) For use as an antioxidant and/or stabilizer only.

2,6-Bis (1-methylheptadecyl)-p-cresol

4-[[4, 6-Bis(octylthio)6-Bis(octylthio)6-Bis(octylthio)-s-triazin-2-yl]amino]-2,6-di-tert-butylphenol (CAS Reg. No. 991-84-4)

Bis(tri-n-butyltin) oxide For use as preservative only.

Bis(trichloromethyl)sulfone C.A. Registry No. 3064-70-8 Do.

Borax

Boric acid

2-Bromo-2-nitro-1, 3-propanediol (CAS Reg. No. 52-51-7) For use only as an antibacterial preservative.

Butanedioic acid, sulfo-1,4-di-(C9-C11 alkyl) ester, ammonium salt (also known as butanedioic acid, sulfo-1,4-diisodecyl ester, ammonium salt [CAS Reg. No. 144093-88-9]). For use as a surface active agent in adhesives.

1,3-Butanediol

1,4-Butanediol

1,4-Butanediol modified with adipic acid

Butoxy polyethylene polyproplyene glycol (molecular weight 900-4,200)

Butyl acetate

Butyl acetyl ricinoleate

Butyl alcohol

Butylated reaction product of p-cresol and dicyclopentadiene As identified in § 178.2010(b) of this chapter.

Butylated, styrenated cresols identified in § 178.2010(b) of this chapter

Butyl benzoate

1,3-Butylene glycoldiglycolic acid copolymer

tert-Butyl hydroperoxide

4,4′-Butylidenebis(6-tert-butyl-m-cresol)

Butyl lactate

p-tert-Butylphenyl salicylate

p-tert-Butylpyrocatechol For use only as polymerization-control agent.

Butyl ricinoleate

Butyl rubber polymer

Butyl stearate

Butyl titanate, polymerized

Butyraldehyde

Calcium ethyl acetoacetate

Calcium nitrate

Calcium metasilicate

Camphor

Camphor fatty acid esters

Candelilla wax

epsilon-Caprolactam-(ethylene-ethyl acrylate) graft polymer

Carbon black, channel process

Carbon disulfide-1,1′-methylenedipiperidine reaction product

Carbon tetrachloride

Carboxymethylcellulose

Castor oil, polyoxyethylated (4-84 moles ethylene oxide)

Cellulose acetate butyrate

Cellulose acetate propionate

Ceresin wax (ozocerite)

Cetyl alcohol

Chloracetamide

Chloral hydrate

Chlorinated liquid n-paraffins with chain lengths of C10-C17, containing 40-70 percent chlorine by weight

Chlorinated pyridine mixture with active ingredients consisting of 2,3,5,6-tetrachloro-4-(methylsulfonyl) pyridine, 2,3,5,6-tetrachloro-4-(methylsulfinyl) pyridine and pentachloropyridine For use as preservative only.

Chlorinated rubber polymer (natural rubber polymer containing approximately 67 percent chlorine)

1-(3-Chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride For use as preservative only.

Chlorobenzene

4-Chloro-3,5-dimethylphenol (p-chloro-m-xylenol) For use as preservative only.

4-Chloro-3-methylphenol Do.

5-Chloro-2-methyl-4-isothiazolin-3-one (CAS Reg. No. 26172-55-4) and 2-methyl-4-isothiazolin-3-one (CAS Reg. No. 2682-20-4) mixture at a ratio of 3 parts to 1 part, manufactured from methyl-3-mercaptopropionate (CAS Reg. No. 2935-90-2). The mixture may contain magnesium nitrate (CAS Reg. No. 10377-60-3) at a concentration equivalent to the isothiazolone active ingredients (weight/weight) For use only as an antimicrobial agent in polymer latex emulsions.

Chloroform

Chloroprene

Chromium caseinate

Chromium nitrate

Chromium potassium sulfate

Cobaltous acetate

Coconut fatty acid amine salt of tetrachlorophenol For use as preservative only.

Copal

Copper 8-quinolinolate For use as preservative only.

Coumarone-indene resin

Cresyl diphenyl phosphate

Cumene hydroperoxide

Cyanoguanidine

Cyclized rubber as identified in § 176.170(b)(2) of this chapter

Cyclohexane

1,4-Cyclohexanedimethanoldibenzoate (CAS Reg. No. 35541-81-2)

Cyclohexanol

Cyclohexanone resin

Cyclohexanone-formaldehyde condensate

N-Cyclohexyl p-toluene sulfonamide

(η5-Cyclopentadienyl)-(η6-isopropylbenzene)iron(II) hexafluorophosphate (CAS Reg. No. 32760-80-8) For use only as a photoinitiator.

Damar

Defoaming agents as described in § 176.210 of this chapter

Dehydroacetic acid

Diacetone alcohol

Diacetyl peroxide

N,N′-Dialkoyl-4,4′-diaminodiphenylmethane mixtures where; the alkoyl groups are derived from marine fatty acids (C12-C24)

2,5-Di-tert-amylhydroquinone

Diamines derived from dimerized vegetable oil acids

Diaryl-p-phenylenediamine, where the aryl group may be phenyl, tolyl, or xylyl

1,2-Dibromo-2,4-dicyanobutane (CAS Registry No. 3569-65-7) For use as a preservative only.

2,2-Dibromo-3-nitrilopropionamide (CAS Reg. No. 10222-01-2). For use as a preservative only.

2,5-Di-tert-butylhydroquinone

Dibutyl maleate

2,6-Di-tert-butyl-4-methylphenol For use as preservative only.

Di(C7, C9-alkyl)adipate

Dibutyl sebacate

Dibutyltin dilaurate for use only as a catalyst for polyurethane resins

1,2-Dichloroethylene (mixed isomers)

Dicumyl peroxide

Dicyclohexyl phthalate

Diethanolamine

Diethanolamine condensed with animal or vegetable fatty acids

Diethylamine

Diethylene glycol

Diethylene glycol adipic acid copolymer

Diethylene glycol dibenzoate

Diethylene glycol hydrogenated tallowate monoester

Diethylene glycol laurate

Diethylene glycol monobutyl ether

Diethylene glycol monobutyl ether acetate

Diethylene glycol monoethyl ether

Diethylene glycol monoethyl ether acetate

Diethylene glycol monomethyl ether

Diethylene glycol monooleate

Diethylene glycol monophenyl ether

Diethylene glycol copolymer of adipic acid and phthalic anhydride

Di(2-ethylhexyl) adipate

Di(2-ethylhexyl)phthalate

Diethyl oxalate

Di(2-hydroxy-5-tert-butylphenyl) sulfide

2,2′-Dihydroxy-5,5′-dichlorodiphenylmethane (dichlorophene)

4,5-Dihydroxy-2-imidazolidinone

4-(Diiodomethylsulfonyl) toluene CA Registry No.: 20018-09-01 For use as an antifungal preservative only.

Diisobutyl adipate

Diisobutyl ketone

Diisobutylphenoxyethoxyethyl dimethyl benzyl ammonium chloride

Diisodecyl adipate

Diisodecyl phthalate

Diisopropylbenzene hydroperoxide

N,N-Dimethylcyclohexylamine dibutyldithiocarbamate

Dimethyl formamide

Dimethyl hexynol

2,2-Dimethyl-1,3-propanediol dibenzoate

Dimethyl octynediol

N-(1,1-dimethyl-3-oxobutyl) acrylamide

3,5-Dimethyl-1,3,5,2H-tetrahydrothiadiazine-2-thione For use as preservative only.

Di-β-naphthyl-p-phenylenediamine

4,6-Dinonyl-o-cresol

Dinonylphenol

Di-n-octyldecyl adipate

Dioctyldiphenylamine

Dioctylsebacate

Dioxane

Dipentaerythritol pentastearate

Dipentamethylene-thiuram-tetrasulfide

Dipentene

Dipentene resins

Dipentene-beta-pinene-styrene resins

Dipentene-styrene resin (CAS Registry No. 64536-06-7)

Diphenyl-2-ethylhexyl phosphate

Diphenyl, hydrogen ated

N,N′-Diphenyl-p-phenylenediamine

1,3-Diphenyl-2-thiourea

Dipropylene glycol

Dipropylene glycol dibenzoate

Dipropylene glycol monomethyl ether

Dipropylene glycol copolymer of adipic acid and phthalic anhydride

Disodium cyanodithioimidocarbonate

Disodium 4-isodecyl sulfosuccinate (CAS Reg. No. 37294-49-8)

N,N′-Distearoylethylenediamine

Distearyl thiodipropionate

3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6(1H, 3H, 5H)-trione For use as antioxidant only.

4,4′-Dithiodimorpholine

n-Dodecylmercaptan

tert-Dodecylmercaptan

Dodecylphenoxybenzene-disulfonic acid and/or its calcium, magnesium, and sodium salts

Elemi gum

Epichlorohydrin-4,4′-isopropylidenediphenol resin

Epichlorohydrin-4,4′-sec-butylidenediphenol resin

Epichlorohydrin-4,4′-isopropylidene-di-o-cresol resin

Epichlorohydrin-phenolformaldehyde resin

Erucamide (erucylamide)

Ethanolamine

Ethoxylated primary linear alcohols of greater than 10 percent ethylene oxide by weight having molecular weights of 390 to 7,000 (CAS Reg. No. 97953-22-5)

Ethoxypropanol butyl ether

Ethyl alcohol (ethanol)

5-Ethyl-1,3-diglycidyl-5-methylhydantoin (CAS Reg. No. 15336-82-0)

Ethylene-acrylic acid-carbon monoxide copolymer (CAS Reg. No. 97756-27-9)

Ethylene-acrylic acid copolymer, partial sodium salt containing no more than 20 percent acrylic acid by weight, and no more than 16 percent of the acrylic acid as the sodium salt (CAS Reg. No. 25750-82-7)

Ethylenediamine

Ethylenediaminetetra-acetic acid, calcium, ferric, potassium, or sodium salts, single or mixed

Ethylene dichloride

Ethylene glycol

Ethylene glycol monobutyl ether

Ethylene glycol monobutyl ether acetate

Ethylene glycol monoethyl ether

Ethylene glycol monoethyl ether acetate

Ethylene glycol monoethyl ether ricinoleate

Ethylene glycol monomethyl ether

Ethylene glycol monophenyl ether

Ethylene-carbon monoxide copolymer (CAS Reg. No. 25052-62-4) containing not more than 30 weight percent of the units derived from carbon monoxide

Ethylene-maleic anhydride copolymer, ammonium or potassium salt

Ethylene-methacrylic acid copolymer partial salts: Ammonium, calcium, magnesium, sodium, and/or zinc

Ethylene-methacrylic acid-vinyl acetate copolymer partial salts: Ammonium, calcium, magnesium, sodium, and/or zinc

Ethylene-octene-1 copolymers containing not less than 70 weight percent ethylene (CAS Reg. No. 26221-73-8)

Ethylene-propylene-dicyclopentadiene copolymer rubber

Ethylene, propylene, 1,4-hexadiene and 2,5-norbornadiene tetrapolymer

Ethylene-vinyl acetate carbon monoxide terpolymer (CAS Registry No. 26337-35-9) containing not more than 15 weight percent of units derived from carbon monoxide

2,2′-Ethylidenebis (4,6-di-tert-butylphenol) (CAS Reg. No. 35958-30-6)

Ethyl-p-hydroxybenzoate For use as preservative only.

Ethyl hydroxyethylcellulose

Ethyl lactate

2,2′-Ethylidenebis(4,6-di-tert-butylphenyl)fluorophosphonite (CAS Reg. No. 118337-09-0) For use as an antioxidant and/or stabilizer only.

Ethyl-p-toluene sulfonamide

Fats and oils derived from animal or vegetable sources, and the hydrogenated, sulfated, or sulfonated forms of such fats and oils

Fatty acids derived from animal or vegetable fats and oils; and salts of such acids, single or mixed, as follows:

Aluminum

Ammonium

Calcium

Magnesium

Potassium

Sodium

Zinc

Ferric chloride

Fluosilicic acid (hydrofluosilicic acid) For use only as bonding agent for aluminum foil, stabilizer, or preservative. Total fluoride from all sources not to exceed 1 percent by weight of the finished adhesive.

Formaldehyde

Formaldehyde o- and p-toluene sulfonamide

Formamide

Fumaratochromium (III) nitrate

Furfural

Furfuryl alcohol

Fumaric acid

gamma-Aminopropyltrimethoxysilane (CAS Reg. No. 13822-56-5)

Glutaraldehyde

Glycerides, di- and monoesters

Glycerol polyoxypropylene triol, minimum average molecular weight 250 (CAS Reg. No. 25791-96-2) For use only in the preparation of polyester and polyurethane resins in adhesives.

Glyceryl borate (glycol boriborate resin)

Glyceryl ester of damar, copal, elemi, and sandarac

Glyceryl monobutyl ricinoleate

Glyceryl monohydroxy stearate

Glyceryl monohydroxy tallowate

Glyceryl polyoxypropylene triol (average molecular weight 1,000)

Glyceryl tribenzoate

Glycol diacetate

Glyoxal

Heptane

Hexamethylenetetramine

Hexane

Hexanetriols

Hexylene glycol

Hydroabietyl alcohol

Hydrocarbon resins (produced by polymerization of mixtures of mono- and di-unsaturated hydrocarbons of the aliphatic, alicyclic, and monobenzenoid type derived both from cracked petroleum and terpene stocks) (CAS Reg. No. 68239-99-6)

Hydrocarbon resins (produced by the polymerization of styrene and alpha-methyl styrene), hydrogenated (CAS Reg. No. 68441-37-2)

Hydrofluoric acid For use only as bonding agent for aluminum foil, stabilizer, or preservative. Total fluoride from all sources not to exceed 1 percent by weight of the finished adhesive.

Hydrogen peroxide

Hydrogenated dipentene resin (CAS Reg. No. 106168-39-2)

Hydrogenated dipentene-styrene copolymer resin (CAS Reg. No. 106168-36-9)

Hydrogenated-beta-pinene-alpha-pinene-dipentene copolymer resin (CAS Reg. No. 106168-37-0)

a-Hydro-omega-hydroxypoly-(oxytetramethylene) For use only in the preparation of polyurethane resins.

Hydroquinone

Hydroquinone monobenzyl ether

Hydroquinone monoethyl ether

2(2′-Hydroxy-3′,5′ di-tert-amylphenyl) benzotriazole

Hydroxyacetic acid

7-Hydroxycoumarin

Hydroxyethylcellulose

2-Hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methyl-1-propanone(CAS Reg. No. 106797-53-9) For use only as a photoinitiator at a level not to exceed 5 percent by weight of the adhesive.

1-(2-Hydroxyethyl)-1-(4-chlorobutyl)-2 alkyl (C6-C17) imidazolinium chloride

Hydroxyethyldiethylenetriamine

β-Hydroxyethyl pyridinium 2-mercaptobenzothiazol

Hydroxyethyl starch

Hydroxyethylurea

Hydroxylamine sulfate

5-Hydroxymethoxymethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane, 5-hydroxymethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane, and 5-hydroxypoly-[methyleneoxy]methyl-1-aza-3,7-dioxabicyclo[3.3.0] octane mixture For use only as an antibacterial preservative.

Hydroxypropyl methylcellulose

2-(Hydroxymethyl)-2-methyl-1,3-propanediol tribenzoate

2-Imidazolidinone

3-Iodo-2-propynyl-N-butyl carbamate (CAS Reg. No. 55406-53-6) For use only as an antifungal preservative.

Iodoform For use only as polymerization-control agent.

Isoascorbic acid

Isobutyl alcohol (isobutanol)

Isobutylene-isoprene copolymer

Isodecyl benzoate (CAS Reg. No. 131298-44-7)

Isophorone

Isopropanolamine (mono-, di-, tri-)

Isopropyl acetate

Isopropyl alcohol (isopropanol)

Isopropyl-m- and p-cresol (thymol derived)

4,4′-Isopropylidenediphenol

4,4′-Isopropylidenediphenol, polybutylated mixture For use as preservative only.

Isopropyl peroxydicarbonate

p-Isopropoxy diphenylamine

4,4′-Isopropylidene-bis(p-phenyleneoxy)-di-2-propanol

Itaconic acid

Japan wax

Kerosene

Lauroyl peroxide

Lauroyl sulfate salts:

Ammonium

Magnesium

Potassium

Sodium

Lauryl alcohol

Lauryl pyridinium 5-chloro-2-mercaptobenzothiazole

Lignin calcium sulfonate

Lignin sodium sulfonate

Linoleamide (linoleic acid amide)

Magnesium fluoride For use only as bonding agent for aluminum foil, stabilizer, or preservative. Total fluoride from all sources not to exceed 1 percent by weight of the finished adhesives.

Magnesium glycerophosphate

Maleic acid

Maleic anhydride-diisobutylene copolymer, ammonium or sodium salt

Manganese acetate

Marine oil fatty acid soaps, hydrogenated

Melamine

Melamine-formaldehyde copolymer

2-Mercaptobenzothiazole

2-Mercaptobenzothiazole and dimethyl dithiocarbamic acid mixture, sodium salt For use as preservative only.

2-Mercaptobenzothiazole, sodium or zinc salt For use as preservative only.

Methacrylate-chromic chloride complex, ethyl or methyl ester

p-Menthane hydroperoxide

Methyl acetate

Methyl acetyl ricinoleate

Methyl alcohol (methanol)

Methylcellulose

Methylene chloride

4,4′-Methylenebis(2,6-di-tert-butylphenol)

2,2-Methylenebis (4-ethyl-6-tert-butylphenol)

2,2-Methylenebis (4-methyl-6-nonylphenol)

2,2-Methylenebis (4-methyl-6-tert-butylphenol)

Methyl ethyl ketone

Methyl ethyl ketone-formaldehyde condensate

2-Methylhexane

1-Methyl-2-hydroxy-4-isopropyl benzene

Methyl isobutyl ketone

Methyl oleate

Methyl oleate-palmitate mixture

Methyl ricinoleate

Methyl salicylate

a-Methylstyrene-vinyltoluene copolymer resins (molar ratio 1 a methylstyrene to 3 vinyltoluene)

Methyl tallowate

Mineral oil

Monochloracetic acid

Monooctyldiphenylamine

Montan wax

Morpholine

Myristic acid-chromic chloride complex

Myristyl alcohol

Naphtha

Naphthalene, monosulfonated

Naphthalene sulfonic acid-formaldehyde condensate, sodium salt

α-Naphthylamine

α,α′,α″,α″′-Neopentane tetrayltetrakis [omega-hydroxypoly (oxypropylene) (1-2 moles)], average molecular weight 400

Nitric acid

µ-Nitrobiphenyl

Nitrocellulose

2-Nitropropane

α-(p-Nonylphenyl)-omega-hydroxypoly (oxyethylene) mixture of dihydrogen phosphate and monohydrogen phosphate esters; the nonyl group is a propylene trimer isomer and the poly (oxyethylene) content averages 6-9 moles or 50 moles

α(p-Nonylphenyl)-omega-hydroxypoly (oxyethylene) produced by the condensation of 1 mole of p-nonylphenol (nonyl group is a propylene trimer isomer) with an average of 1-40 moles of ethylene oxide

α-(p-Nonylphenyl)-omega-hydroxypoly (oxyethylene) sulfate, ammonium salt: the nonyl group is a propylene trimer isomer and the poly (oxyethylene) content averages 9 or 30 moles

endo-cis-5-Norbornene-2,3-dicarboxylic anhydride

α-cis-9-Octadecenyl-omega-hydroxypoly (oxyethylene); the octadecenyl group is derived from oleyl alcohol and the poly (oxyethylene) content averages 20 moles

Octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate

Octyl alcohol

Octylphenol

Octylphenoxyethanols

Octylphenoxypolyethoxy-polypropoxyethanol (13 moles of ethylene oxide and propylene oxide)

Odorless light petroleum hydrocarbons

Oleamide (oleic acid amide)

Oleic acid, sulfated

2,2′-Oxamidobis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (CAS Reg. No. 70331-94-1)

Oxazoline

α-(oxiranylmethyl)-ω-(oxiranylmethoxy)poly[oxy(methyl-1,2-ethanediyl)], (alternative name: epichlorohydrin-polypropylene glycol) (CAS Reg. No. 26142-30-3) For use as a reactant in the preparation of epoxy-based resins.

2,2′-[oxybis[(methyl-2,1-ethanediyl)-oxymethylene]]bisoxirane, (alternative name: epichlorohydrin-dipropylene glycol) (CAS Reg. No. 41638-13-5) For use as a reactant in the preparation of epoxy-based resins.

n-Oxydiethylene-benzothiazole

Palmitamide (palmitic acid amide)

Paraffin (C12-C20) sulfonate

Paraformaldehyde

Pentachlorophenol

Pentaerythritol ester of maleic anhydride

Pentaerythritol monostearate For use as preservative only.

Pentaerythritol tetrabenzoate [CAS Registry No. 4196-86-5]

Pentaerythritol tetrastearate

2,4-Pentanedione

Pentasodium diethylenetriaminepentaacetate (CAS Reg. No. 140-01-2)

Perchloroethylene

Petrolatum

Petroleum hydrocarbon resin (cyclopentadiene type), hydrogenated

Petroleum hydrocarbon resin (produced by the catalytic polymerization and subsequent hydrogenation of styrene, vinyltoluene, and indene types from distillates of cracked petroleum stocks)

Petroleum hydrocarbon resins (produced by the homo-and copolymerization of dienes and olefins of the aliphatic, alicyclic, and monobenzenoid arylalkene types from distillates of cracked petroleum stocks)

Phenol For use as preservative only.

Phenol-coumarone-indene resin

Phenolic resins as described in § 175.300(b)(3)(vi)

Phenothiazine For use only as polymerization-control agent.

Phenyl-β-naphthylamine (free of β-naphthylamine)

o-Phenylphenol For use as preservative only.

o-Phthalic acid

Pimaric acid

Pine oil

Piperazine

Piperidinium pentamethylenedithiocarbamate

Poly(acrylamide-[2-acrylamide-2-methylpropylsulfonate]-dimethylidiallyl ammonium chloride) sodium salt (CAS Reg. No. 72275-68-4)

Polyamides derived from reaction of one or more of the following acids with one or more of the following amines:

Acids:

Azelaic acid

Dimerized vegetable oil acids

Amines:

Bis(hexamethylene) triamine and higher homologues

Diethylenetriamine

Diphenylamine

Ethylenediamine

Hexamethylenediamine

Poly(oxypropylene)diamine (weight average molecular weight 2010) (CAS Reg. No. 9046-10-0)

Poly(oxypropylene)diamine (weight average molecular weight 440) (CAS Reg. No. 9046-10-0)

Tetraethylenepentamine

Triethylenetetramine

Polybutene, hydrogenated

Polybutylene glycol (molecular weight 1,000)

Poly [2(diethylamino) ethyl methacrylate] phosphate

Polyester of adipic acid, phthalic acid, and propylene glycol, terminated with butyl alcohol

Polyester of diglycolic acid and propylene glycol containing ethylene glycol monobutyl ether as a chain stopper

Polyester resins (including alkyd type), as the basic polymer, formed as esters when one or more of the following acids are made to react with one or more of the following alcohols:

Acids:

Azelaic acid

Dimethyl 1,4-cyclohexanedicarboxylate (CAS Reg. No. 94-60-0)

Dimethyl-5-sulfoisophthalic acid (CAS Reg. No. 50975-82-1) and/or its sodium salt (CAS Reg. No. 3965-55-7)

Polybasic and monobasic acids identified in § 175.300(b)(3)(vii)(a) and (b)

5-sulfo-1,3-benzenedicarboxylic acid, monosodium salt (CAS Reg. No. 6362-79-4)

Tetrahydrophthalic acid

Alcohols:

1,4-Cyclohexanedimethanol

2,2-Dimethyl-1,3-propanediol

1,6-Hexanediol (CAS Reg. No. 629-11-8)

Polyhydric and monohydric alcohols identified in § 175.300(b)(3)(vii)(c) and (d)

Polyethyleneadipate modified with ethanolamine with the molar ratio of the amine to the adipic acid less than 0.1 to 1 For use only in the preparation of polyurethan resins.

Polyethylene glycol (molecular weight 200-6,000)

Polyethylene glycol mono-isotridecyl ether sulfate, sodium salt (CAS Reg. No. 150413-26-6)

Polyethyleneglycol alkyl(C10-C12)ether sulfosuccinate, disodium salt (CAS Reg. No. 68954-91-6)

Polyethylene, oxidized

Polyethylene resins, carboxyl modified, identified in § 177.1600 of this chapter

Polyethylenimine

Polyethylenimine-epichlorohydrin resins

Poly(ethyloxazoline) (CAS Reg. No. 25805-17-8)

Polyisoprene

Polymeric esters of polyhydric alcohols and polycarboxylic acids prepared from glycerin and phthalic anhydride and modified with benzoic acid, castor oil, coconut oil, linseed oil, rosin, soybean oil, styrene, and vinyl toluene

Polymers: Homopolymers and copolymers of the following monomers:

Acrylamide

Acrylic acid

Acrylonitrile

Allylmethacrylate (CAS Reg. No. 00096-05-09)

Butadiene

Butene

N-tert-Butylacrylamide

Butyl acrylate

1,3-Butylene glycol dimethacrylate

Butyl methacrylate

Crotonic acid

Decyl acrylate

Diallyl fumarate

Diallyl maleate

Diallyl phthalate

Dibutyl fumarate

Dibutyl itaconate

Dibutyl maleate

Di(2-ethylhexyl) maleate

Dimethyl-α-methylstyrene

Dioctyl fumarate

Dioctyl maleate

Divinylbenzene

Ethyl acrylate

Ethylene

Ethylene cyanohydrin

2-Ethylhexyl acrylate

Ethyl methacrylate

Fatty acids, C10-13-branched, vinyl esters (CAS Reg. No. 184785-38-4)

Fumaric acid and/or its methyl, ethyl, propyl, butyl, amyl hexyl, heptyl and octyl esters

Glycidyl methacrylate

1-Hexene (CAS Reg. No. 592-41-6)

2-Hydroxyethyl acrylate

2-Hydroxyethyl methacrylate

2-Hydroxypropyl methacrylate

Isobutyl acrylate

Isobutylene

Itaconic acid

Maleic acid, diester with 2-hydroxyethanesulfonic acid, sodium salt

Maleic anhydride

Methacrylic acid

Methyl acrylate

N,N′-Methylenebisacrylamide

Methyl methacrylate

N-Methylolacrylamide

Methyl styrene

-Methyl styrene

Monoethyl maleate

Monomethyl maleate

Mono (2-ethylhexyl) maleate

5-Norbornene-2 3-dicarboxylic acid, mono-n-butyl ester

1-Octene (CAS Reg. No. 111-66-0)

Propyl acrylate

Propylene

Styrene

Triallyl cyanurate

Vinyl acetate

Vinyl alcohol (from alcoholysis or hydrolysis of vinyl acetate units)

Vinyl butyrate

Vinyl chloride

Vinyl crotonate

Vinyl ethyl ether

Vinyl hexoate

Vinylidene chloride

Vinyl methyl ether

Vinyl pelargonate

Vinyl propionate

Vinyl pyrrolidone

Vinyl stearate

Polyoxyalkylated-phenolic resin (phenolic resin obtained from formaldehyde plus butyl- and/or amylphenols, oxyalkylated with ethylene oxide and/or propylene oxide)

Poly(oxycaproyl) diols and triols (minimum molecular weight 500)

Polyoxyethylated (40 moles) tallow alcohol sulfate, sodium salt

Polyoxyethylene (20 mol)—anhydrous lanolin adduct

Polyoxyethylene (molecular weight 200) dibenzoate

Polyoxyethylene (molecular weight 200-600) esters of fatty acids derived from animal or vegetable fats and oils (including tall oil)

Polyoxyethylene (15 moles) ester of rosin

Polyoxyethylene (4-5 moles) ether of phenol

Polyoxyethylene (25 moles)—glycerol adduct

Polyoxyethylene (40 moles) stearate

Polyoxyethylene (5-15 moles) tridecyl alcohol

Polyoxypropylene (3 moles) tridecyl alcohol sulfate

Polyoxypropylene (20 moles) butyl ether

Polyoxypropylene (40 moles) butyl ether

Polyoxypropylene (20 moles) oleate butyl ether

Polyoxypropylene-polyoxyethylene condensate (minimum molecular weight 1,900)

Polypropylene glycol (minimum molecular weight 150)

Polypropylene glycol (3-4 moles) triether with 2-ethyl-2-(hydroxymethyl)-1,3-propane-diol, average molecular weight 730

Polypropylene glycol dibenzoate (CAS Reg. No. 72245-46-6) For use as a plasticizer at levels not to exceed 20 percent by weight of the finished adhesive.

Polypropylene, noncrystalline

Polysiloxanes:

Diethyl polysiloxane

Dihydrogen polysiloxane

Dimethyl polysiloxane

Diphenyl polysiloxane

Ethyl hydrogen polysiloxane

Ethyl phenyl polysiloxane

Methyl ethyl polysiloxane

Methyl hydrogen polysiloxane

Methyl phenyl polysiloxane

Phenyl hydrogen polysiloxane

Polysorbate 60

Polysorbate 80

Polysorbate 20 (polyoxyethylene (20) sorbitan monolaurate)

Polysorbate 40 (polyoxyethylene (20) sorbitan monopalmitate)

Poly[styrene-co-disodium maleate-co-α-(p-nonyl-phenyl)-omega-(p-vinyl-benzyl)poly(oxyethylene)] terpolymer

Polytetrafluoroethylene.

Polyurethane resins produced by: (1) reacting diisocyanates with one or more of the polyols or polyesters named in this paragraph, or (2) reacting the chloroformate derivatives of one or more of the polyols or polyesters named in this paragraph with one or more of the polyamines named in this paragraph, or (3) reacting toluene diisocyanate or 4,4′ methylenebis(cyclohexylisocyanate) (CAS Reg. No. 5124-30-1) with: (i) one or more of the polyols or polyesters named in this paragraph and with either N-methyldiethanolamine (CAS Reg. No. 105-59-9) and dimethyl sulfate (CAS Reg. No. 77-78-1) or dimethylolpropionic acid (CAS Reg. No. 4767-03-7) and triethylamine (CAS Reg. No. 121-44-8), or (ii) a fumaric acid-modified polypropylene glycol or fumaric acid-modified tripropylene glycol), triethylamine (CAS Reg. No. 107-15-3), and ethylenediamine (CAS Reg. No. 121-44-8), or (4) reacting meta-tetramethylxylene diisocyanate (CAS Reg. No. 2778-42-9) with one or more of the polyols and polyesters listed in this paragraph and with dimethylolpropionic acid (CAS Reg. No. 4767-03-7) and triethylamine (CAS Reg. No. 121-44-8), N-methyldiethanolamine (CAS Reg. No. 105-59-9), 2-dimethylaminoethanol (CAS Reg. No. 108-01-0), 2-dimethylamino-2-methyl-1-propanol (CAS Reg. No. 7005-47-2), and/or 2-amino-2-methyl-1-propanol (CAS Reg. No. 124-68-5)

Polyvinyl alcohol modified so as to contain not more than 3 weight percent of comonomer units derived from 1-alkenes having 12 to 20 carbon atoms

Polyvinyl butyral

Polyvinyl formal

Potassium ferricyanide For use only as polymerization-control agent.

Potassium N-methyldithiocarbamate

Potassium pentachlorophenate For use as preservative only.

Potassium permanganate

Potassium persulfate

Potassium phosphates (mono-, di-, tribasic)

Potassium tripolyphosphate

α, α′, α″-1,2,3-Propanetriyltris [omega-(2,3-epoxypropoxy) poly (oxypropylene) (24 moles)]

β-Propiolactone

Propyl alcohol (propanol)

Propylene carbonate

Propylene glycol and p-p′-isopropylidenediphenol diether

Propylene glycol dibenzoate (CAS Reg. No. 19224-26-1) For use as a plasticizer at levels not to exceed 20 percent by weight of the finished adhesive.

Propylene glycol esters of coconut fatty acids

Propylene glycol monolaurate

Propylene glycol monomethyl ether

Propylene glycol monostearate

α, α′, α″-[Propylidynetris (methylene)] tris [omega-hydroxypoly (oxypropylene) (1.5 moles minimum)], minimum molecular weight 400

Quaternary ammonium chloride (hexadecyl, octadecyl derivative) For use as preservative only.

Rosin (wood, gum, and tall oil rosin), rosin dimers, decarboxylated rosin (including rosin oil, disproportionated rosin, and these substances as modified by one or more of the following reactants:

Alkyl (C1-C9) phenolformaldehyde

Ammonia

Ammonium caseinate-p-Cyclohexylphenolformaldehyde

Diethylene glycol

Dipentaerythritol

Ethylene glycol

Formaldehyde

Fumaric acid

Glycerin

Hydrogen

Isophthalic acid

4,4′-Isopropylidenediphenol-epichlorohydrin (epoxy)

4,4′-Isopropylidenediphenol-formaldehyde

Maleic anhydride

Methyl alcohol

Pentaerythritol

Phthalic anhydride

Polyethylene glycol

Phenol-formaldehyde

Phenyl μ-cresol-formaldehyde

p-Phenylphenol-formaldehyde

Sulfuric acid

Triethylene glycol

Xylenol-formaldehyde

Rosin salts (salts of wood, gum, and tall oil rosin, and the dimers thereof, decarboxylated rosin disproportionated rosin, hydrogenated rosin):

Aluminum

Ammonium

Calcium

Magnesium

Potassium

Sodium

Zinc

Rosin, gasoline-insoluble fraction

Rubber hydrochloride polymer

Rubber latex, natural

Salicylic acid For use as preservative only.

Sandarac

Sebacic acid

Shellac

Silicon dioxide as defined in § 172.480(a) of this chapter

Sodium alkyl (C2-C13.5 aliphatic) benezenesulfonate

Sodium aluminum pyrophosphate

Sodium aluminum sulfate

Sodium bisulfate

Sodium calcium silicate

Sodium capryl polyphosphate

Sodium carboxymethylcellulose

Sodium chlorate

Sodium chlorite

Sodium chromate

Sodium decylsulfate

Sodium dehydroacetate For use as preservative only.

Sodium di-(2-ethylhexoate)

Sodium di-(2-ethylhexyl) pyrophosphate

Sodium dihexylsulfosuccinate

Sodium dissobutylphenoxydiethoxyethyl sulfonate

Sodium diisobutylphenoxymonoethoxyethyl sulfonate

Sodium diisopropyl- and triisopropylnaphthalenesulfonate

Sodium dimethyldithiocarbamate

Sodium dioctylsulfosuccinate

Sodium n-dodecylpolyethoxy (50 moles) sulfate

Sodium ethylene ether of nonylphenol sulfate

Sodium 2-ethylhexyl sulfate

Sodium fluoride For use only as bonding agent for aluminum foil, stabilizer, or preservative. Total fluoride for all sources not to exceed 1 percent by weight of the finished adhesive.

Sodium formaldehyde sulfoxylate

Sodium formate

Sodium heptadecylsulfate

Sodium hypochlorite

Sodium isododecylphenoxypolyethoxy (40 moles) sulfate

Sodium N-lauroyl sarcosinate

Sodium metaborate

Sodium α-naphthalene sulfonate

Sodium nitrate

Sodium nitrite

Sodium oleoyl isopropanolamide sulfosuccinate

Sodium pentachlorophenate For use as preservative only.

Sodium perborate

Sodium persulfate

Sodium μ-phenylphenate For use as preservative only.

Sodium polyacrylate

Sodium polymethacrylate

Sodium polystyrene sulfonate

Sodium salicylate For use as preservative only.

Sodium salt of 1-hydroxy 2(1H)-pyridine thione Do.

Sodium tetradecylsulfate

Sodium thiocyanate

Sodium bis-tridecylsulfosuccinate

Sodium xylene sulfonate

Sorbitan monooleate

Sorbitan monostearate

Soybean oil, epoxidized

Spermaceti wax

Sperm oil wax

Stannous 2-ethylhexanoate For use only as a catalyst for polyurethane resins.

Stannous stearate

Starch hydrolysates

Starch or starch modified by one or more of the treatments described in §§ 172.892 and 178.3520 of this chapter

Starch, reacted with a urea-formaldehyde resin

Starch, reacted with formaldehyde

Stearamide (stearic acid amide)

Stearic acid

Stearic acid-chromic chloride complex

Stearyl-cetyl alcohol, technical grade, approximately 65 percent-80 percent stearyl and 20 percent-35 percent cetyl

Strontium salicylate

Styrenated phenol

Styrene block polymers with 1,3-butadiene

Styrene-maleic anhydride copolymer, ammonium or potassium salt

Styrene-maleic anhydride copolymer (partially methylated) sodium salt

Styrene-methacrylic acid copolymer, potassium salt

Sucrose acetate isobutyrate

Sucrose benzoate

Sucrose octaacetate

2-sulfoethyl methacrylate (CAS Registry No. 10595-80-9) For use at levels not to exceed 2 percent by weight of the dry adhesive.

α-Sulfo-omega-(dodecyloxy)poly (oxyethylene), ammonium salt

Sulfonated octadecylene (sodium form)

Sulfosuccinic acid 4-ester with polyethylene glycol dodecyl ether disodium salt (alcohol moiety produced by condensation of 1 mole of n-dodecyl alcohol and an average of 5-6 moles of ethylene oxide, Chemical Abstracts Service Registry No. 039354-45-5)

Sulfosuccinic acid 4-ester with polyethylene glycol nonylphenyl ether, disodium salt (alcohol moiety produced by condensation of 1 mole of nonylphenol and an average of 9-10 moles of ethylene oxide) (CAS Reg. No. 9040-38-4)

Sulfur

Synthetic primary linear aliphatic alcohols whose weight average molecular weight is greater than 400 (CAS Reg. No. 71750-71-5)

Synthetic wax polymer as described in § 176.170(a)(5) of this chapter

Tall oil

Tall oil fatty acids, linoleic and oleic

Tall oil fatty acid methyl ester

Tall oil, methyl ester

Tall oil pitch

Tall oil soaps

Tallow alcohol (hydrogenated)

Tallow amine, secondary (hexadecyl, octadecyl), of hard tallow

Tallow, blown (oxidized)

Tallow, propylene glycol ester

Terpene resins (α-and β-pinene) homopolymers, copolymers, and condensates with phenol, formaldehyde, coumarone, and/or indene

Terphenyl

Terphenyl, hydrogenated

Terpineol

Tetraethylene pentamine

Tetraethylthiuram disulfide

Tetrahydrofuran

Tetrahydrofurfuryl alcohol

Tetra-isopropyl titanate

Tetrakis[methylene (3,5-di-tert-butyl-4-hydroxy-hydro-cinnamate)] methane

a[p-(1,1,3,3-Tetramethylbutyl) phenyl]-omega-hydroxypoly-(oxyethylene) produced by the condensation of 1 mole of p-(1,1,3,3-tetramethylbutyl) phenol with an average of 1-40 moles of ethylene oxide

a-[p-(1,1,3,3-Tetramethylbutyl) phenyl]-omega-hydroxy-poly(oxyethylene) mixture of dihydrogen phosphate and monohydrogen phosphate esters and their sodium, potassium, and ammonium salts having a poly(oxyethylene) content averaging 6-9 or 40 moles

Tetramethyl decanediol

Tetramethyl decynediol

Tetramethyl decynediol plus 1-30 moles of ethylene oxide

Tetramethylthiuram monosulfide

Tetrasodium N-(1,2-dicarboxyethyl)N-octadecylsulfosuccinamate

4,4′-Thiobis-6-tert-butyl-m-cresol

Thiodiethylene-bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)

2,2′-(2,5-Thiophenediyl) bis[5-tert-butylbenzoxazole]

Thiram

Thymol For use as preservative only.

Titanium dioxide

Titanium dioxide-barium sulfate

Titanium dioxide-calcium sulfate

Titanium dioxide-magnesium silicate

Toluene

Toluene 2,4-diisocyanate

Toluene 2,6-diisocyanate

o- and p-Toluene ethyl sulfonamide

o- and p-Toluene sulfonamide

p-Toluene sulfonic acid

p-(p′-Toluene-sulfonylamide)-diphenylamide

Triazine-formaldehyde resins as described in § 175.300(b)(3)(xiii)

Tributoxyethyl phosphate

Tributylcitrate

Tri-tert-butyl-p-phenyl phenol For use as preservative only.

Tributyl phosphate

Tributyltin chloride complex of ethylene oxide condensate of dehydroabietylamine For use as preservative only.

Tri-n-butyltin acetate For use as preservative only.

Tri-n-butyltin neodecanoate Do.

1,1,1-Trichloroethane

1,1,2-Trichloroethane

Trichloroethylene

Tri-β-chloroethylphosphate

Tridecyl alcohol

Triethanolamine

3-(Triethoxysilyl) propylamine

Triethylene glycol

Triethylene glycol dibenzoate

Triethylene glycol di(2-ethylhexoate)

Triethylene glycol polyester of benzoic acid and phthalic acid

Triethylhexyl phosphate

Triethylphosphate

2,4,5-Trihydroxy butyrophenone

Triisopropanolamine

Trimethylol propane

2,2,4-Trimethylpentanediol-1,3-diisobutyrate

Trimeric aromatic amine resin from diphenylamine and acetone of molecular weight approximately 500

Tri(nonylphenyl) phosphite-formaldehyde resins As identified in § 177.2600(c)(4)(iii) of this chapter. For use only as a stabilizer.

Triphenylphosphate

Tripropylene glycol monomethyl ether

1,3,5-Tris (3,5-di-tert-butyl-4-hydroxy-benzyl)-triazine-2,4,6 (1H,3H,5H)-trione

Tris (p-tertiary butyl phenyl) phosphate

Tris(2-methyl-4-hydroxy-5-tert-butyl-phenyl)butane

Trisodium N-hydroxyethylethylenediaminetriacetate (CAS Reg. No. 139-89-9)

Turpentine

Urea-formaldehyde resins as described in § 175.300(b)(3)(xii)

Vegetable oil, sulfonated or sulfated, potassium salt

Vinyl acetate-maleic anhydride copolymer, sodium salt

Waxes, petroleum

Wax, petroleum, chlorinated (40% to 70% chlorine)

Waxes, synthetic paraffin (Fischer-Tropsch process)

3-(2-Xenolyl)-1,2-epoxypropane

Xylene

Xylene (or toluene) alkylated with dicyclopentadiene

Zein

Zinc acetate

Zinc ammonium chloride

Zinc dibenzyl dithiocarbamate

Zinc dibutyldithiocarbamate

Zinc diethyldithiocarbamate

Zinc di(2-ethylhexoate)

Zinc formaldehyde sulfoxylate

Zinc naphthenate and dehydroabietylamine mixture

Zinc nitrate

Zinc orthophosphate

Zinc resinate

Zinc sulfide

Zineb (zinc ethylenebis-dithiocarbamate)

Ziram (zinc dimethyldithiocarbamate)