{"data":{"id":"us/27-cfr-21.127","jurisdiction":"us","citation":"27 CFR 21.127","heading":"Shellac (refined).","body":"(a) Arsenic content. Not more than 1.4 parts per million as determined by the Gutzeit Method (AOAC method 25.020; for incorporation by reference, see § 21.6(c)).\n(b) Color. White or orange.\n(c) Rosin content. None when tested by the following method: Add 20 mL of absolute alcohol or glacial acetic acid (m. p. 13° to 15 °C.) to 2 grams of the shellac and thoroughly dissolve. Add 100 mL of petroleum ether and mix thoroughly. Add approximately 2 liters of water and separate a portion of the ether layer (at least 50 mL) and filter if cloudy. Evaporate the petroleum ether and test as follows: Solution A—5 mL of phenol dissolved in 10 mL of carbon tetrachloride. Solution B—1 mL of bromine dissolved in 4 mL of carbon tetrachloride. To the residue obtained above add 2 mL of Solution A and transfer the mixture to a porcelain spot plate, filling one cavity. Immediately fill an adjacent cavity with solution B. Cover the plate with a watch glass and observe any color formation in Solution A. A decided purple or deep indigo blue color is an indication of the presence of rosin.","path":["Title 27—Alcohol, Tobacco Products and Firearms","CHAPTER I—ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY","SUBCHAPTER A—ALCOHOL","PART 21—FORMULAS FOR DENATURED ALCOHOL AND RUM","Subpart E—Specifications for Denaturants"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-27.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:11Z","sha256":"5d60dea0cc27c81a58a3080ed17f185b8722cbb8962865dbce631d86ccf42970","source_id":"us-cfr","stale":true,"prev":"us/27-cfr-21.126","next":"us/27-cfr-21.128"},"notice":"GroundRules: Original legal text. Not legal advice."}