{"data":{"id":"us/49-cfr-173.313","jurisdiction":"us","citation":"49 CFR 173.313","heading":"UN Portable Tank Table for Liquefied Compressed Gases and Chemical Under Pressure.","body":"The UN Portable Tank Table for Liquefied Compressed Gases and chemical under pressure is referenced in § 172.102(c)(7)(iii) of this subchapter for portable tanks that are used to transport liquefied compressed gases and chemicals under pressure. The table applies to each liquefied compressed gas and chemical under pressure that is identified with Special Provision T50 in Column (7) of the Hazardous Materials Table in § 172.101. In addition to providing the UN identification number and proper shipping name, the table provides the minimum design pressures, bottom opening requirements, pressure relief device requirements, and degree of filling requirements for liquefied compressed gases and chemicals under pressure permitted for transportation in a T50 portable tank. In the minimum design pressure column, “small” means a portable tank with a diameter of 1.5 meters or less when measured at the widest part of the shell, “sunshield” means a portable tank with a shield covering at least the upper third of the shell, “bare” means no sunshield or insulation is provided, and “insulated” means a complete cladding of sufficient thickness of insulating material necessary to provide a minimum conductance of not more than 0.67 w/m2/k. In the pressure relief requirements column, the word “Normal” denotes that a frangible disc as specified in § 178.276(e)(3) of this subchapter is not required.\nUN Portable Tank Table for Liquefied Compressed Gases and Chemicals Under Pressure\nUN No. Non-refrigerated liquefied compressed gases Minimum design pressure (bar) small; bare; sunshield; insulated Openings below liquid level Pressure relief requirements (See § 178.276(e)) Maximum filling density (kg/l)\n1005 Ammonia, anhydrous 29.0 Allowed § 178.276(e)(3) 0.53\n25.7\n22.0\n19.7\n1009 Bromotrifluoromethane or Refrigerant gas R 13B1 38.0 Allowed Normal 1.13\n34.0\n30.0\n27.5\n1010 Butadienes, stabilized 7.5 Allowed Normal 0.55\n7.0\n7.0\n7.0\n1011 Butane 7.0 Allowed Normal 0.51\n7.0\n7.0\n7.0\n1012 Butylene 8.0 Allowed Normal 0.53\n7.0\n7.0\n7.0\n1017 Chlorine 19.0 Not § 178.276(e)(3) 1.25\n17.0 Allowed\n15.0\n13.5\n1018 Chlorodifluoromethane or Refrigerant gas R 22 26.0 Allowed Normal 1.03\n24.0\n21.0\n19.0\n1020 Chloropentafluoroethane or Refrigerant gas R 115 23.0 Allowed Normal 1.06\n20.0\n18.0\n16.0\n1021 1-Chloro-1,2,2,2-tetrafluoroethane or Refrigerant gas R 124 10.3 Allowed Normal 1.2\n9.8\n7.9\n7.0\n1027 Cyclopropane 18.0 Allowed Normal 0.53\n16.0\n14.5\n13.0\n1028 Dichlorodifluoromethane or Refrigerant gas R 12 16.0 Allowed Normal 1.15\n15.0\n13.0\n11.5\n1029 Dichlorofluoromethane or Refrigerant gas R 21 7.0 Allowed Normal 1.23\n7.0\n7.0\n7.0\n1030 1,1-Difluoroethane or Refrigerant gas R 152a 16.0 Allowed Normal 0.79\n14.0\n12.4\n11.0\n1032 Dimethylamine, anhydrous 7.0 Allowed Normal 0.59\n7.0\n7.0\n7.0\n1033 Dimethyl ether 15.5 Allowed Normal 0.58\n13.8\n12.0\n10.6\n1036 Ethylamine 7.0 Allowed Normal 0.61\n7.0\n7.0\n7.0\n1037 Ethyl chloride 7.0 Allowed Normal 0.8\n7.0\n7.0\n7.0\n1040 Ethylene oxide with nitrogen up to a total pressure of 1MPa (10 bar) at 50 °C Only authorized in 10 bar insulated portable tanks— Not Allowed § 178.276(e)(3) 0.78\n1041 Ethylene oxide and carbon dioxide mixture with more than 9% but not more than 87% ethylene oxide See MAWP definition in § 178.276(a) Allowed Normal See § 173.32(f)\n1055 Isobutylene 8.1 Allowed Normal 0.52\n7.0\n7.0\n7.0\n1060 Methyl acetylene and propadiene mixture, stabilized 28.0 Allowed Normal 0.43\n24.5\n22.0\n20.0\n1061 Methylamine, anhydrous 10.8 Allowed Normal 0.58\n9.6\n7.8\n7.0\n1062 Methyl bromide 7.0 Not Allowed § 178.276(e)(3) 1.51\n7.0\n7.0\n7.0\n1063 Methyl chloride or Refrigerant gas R 40 14.5 Allowed Normal 0.81\n12.7\n11.3\n10.0\n1064 Methyl mercaptan 7.0 Not Allowed § 178.276(e)(3) 0.78\n7.0\n7.0\n7.0\n1067 Dinitrogen tetroxide 7.0 Not Allowed § 178.276(e)(3) 1.3\n7.0\n7.0\n7.0\n1075 Petroleum gas, liquefied See MAWP definition in § 178.276(a) Allowed Normal See § 173.32(f)\n1077 Propylene 28.0 Allowed Normal 0.43\n24.5\n22.0\n20.0\n1078 Refrigerant gas, n.o.s. See MAWP definition in § 178.276(a) Allowed Normal See § 173.32(f)\n1079 Sulphur dioxide 11.6 Not Allowed § 178.276(e)(3) 1.23\n10.3\n8.5\n7.6\n1082 Trifluorochloroethylene, stabilized or Refrigerant gas R 1113 17.0 Not Allowed § 178.276(e)(3) 1.13\n15.0\n13.1\n11.6\n1083 Trimethylamine, anhydrous 7.0 Allowed Normal 0.56\n7.0\n7.0\n7.0\n1085 Vinyl bromide, stabilized 7.0 Allowed Normal 1.37\n7.0\n7.0\n7.0\n1086 Vinyl chloride, stabilized 10.6 Allowed Normal 0.81\n9.3\n8.0\n7.0\n1087 Vinyl methyl ether, stabilized 7.0 Allowed Normal 0.67\n7.0\n7.0\n7.0\n1581 Chloropicrin and methyl bromide mixture 7.0 Not Allowed § 178.276(e)(3) 1.51\n7.0\n7.0\n7.0\n1582 Chloropicrin and methyl chloride mixture 19.2 Not Allowed § 178.276(e)(3) 0.81\n16.9\n15.1\n13.1\n1858 Hexafluoropropylene compressed or Refrigerant gas R 1216 19.2 Allowed Normal 1.11\n16.9\n15.1\n13.1\n1912 Methyl chloride and methylene chloride mixture 15.2 Allowed Normal 0.081\n13.0\n11.6\n10.1\nNA, 1954 Insecticide gases, flammable, n.o.s. See MAWP definition in § 178.276(a) Allowed Normal § 173.32(f)\n1958 1,2-Dichloro-1,1,2,2-tetrafluoroethane or Refrigerant gas R 114 7.0 Allowed Normal 1.3\n7.0\n7.0\n7.0\n1965 Hydrocarbon gas, mixture liquefied, n.o.s. See MAWP definition in 178.276(a) Allowed Normal See § 173.32(f)\n1969 Isobutane 8.5 Allowed Normal 0.49\n7.5\n7.0\n7.0\n1973 Chlorodifluoromethane and chloropentafluoroethane mixture with fixed boiling point, with approximately 49% chlorodifluoromethane or Refrigerant gas R 502 28.3 Allowed Normal 1.05\n25.3\n22.8\n20.3\n1974 Chlorodifluorobromomethane or Refrigerant gas R 12B1 7.4 Allowed Normal 1.61\n7.0\n7.0\n7.0\n1976 Octafluorocyclobutane or Refrigerant gas RC 318 8.8 Allowed Normal 1.34\n7.8\n7.0\n7.0\n1978 Propane 22.5 Allowed Normal 0.42\n20.4\n18.0\n16.5\n1983 1-Chloro-2,2,2-trifluoroethane or Refrigerant gas R 133a 7.0 Allowed Normal 1.18\n7.0\n7.0\n7.0\n2035 1,1,1-Trifluoroethane compressed or Refrigerant gas R 143a 31.0 Allowed Normal 0.76\n27.5\n24.2\n21.8\n2424 Octafluoropropane or Refrigerant gas R 218 23.1 Allowed Normal 1.07\n20.8\n18.6\n16.6\n2517 1-Chloro-1,1-difluoroethane or Refrigerant gas R 142b 8.9 Allowed Normal 0.99\n7.8\n7.0\n7.0\n2602 Dichlorodifluoromethane and difluoroethane azeotropic mixture with approximately 74% dichlorodifluoromethane or Refrigerant gas R 500 20.0 Allowed Normal 1.01\n18.0\n16.0\n14.5\n3057 Trifluoroacetyl chloride 14.6 Not allowed § 178.276(e)(3) 1.17\n12.9\n11.3\n9.9\n3070 Ethylene oxide and dichlorodifluoromethane mixture with not more than 12.5% ethylene oxide 14.0 Allowed § 178.276(e)(3) 1.09\n12.0\n11.0\n9.0\n3153 Perfluoro (methyl vinyl ether) 14.3 Allowed Normal 1.14\n13.4\n11.2\n10.2\n3159 1,1,1,2-Tetrafluoroethane or Refrigerant gas R 134a 17.7 Allowed Normal 1.04\n15.7\n13.8\n12.1\n3161 Liquefied gas, flammable, n.o.s. See MAWP definition in § 178.276(a) Allowed Normal § 173.32(f)\n3163 Liquefied gas, n.o.s. See MAWP definition in § 178.276(a) Allowed Normal § 173.32(f)\n3220 Pentafluoroethane or Refrigerant gas R 125 34.4\n30.8\n27.5\n24.5 Allowed Normal 0.87\n3252 Difluoromethane or Refrigerant gas R 32 43.0 Allowed Normal 0.78\n39.0\n34.4\n30.5\n3296 Heptafluoropropane or Refrigerant gas R 227 16.0 Allowed Normal 1.2\n14.0\n12.5\n11.0\n3297 Ethylene oxide and chlorotetrafluoroethane mixture, with not more than 8.8% ethylene oxide 8.1 Allowed Normal 1.16\n7.0\n7.0\n7.0\n3298 Ethylene oxide and pentafluoroethane mixture, with not more than 7.9% ethylene oxide 25.9 Allowed Normal 1.02\n23.4\n20.9\n18.6\n3299 Ethylene oxide and tetrafluoroethane mixture, with not more than 5.6% ethylene oxide 16.7 Allowed Normal 1.03\n14.7\n12.9\n11.2\n3318 Ammonia solution, relative density less than 0.880 at 15 °C in water, with more than 50% ammonia See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) § 173.32(f)\n3337 Refrigerant gas R 404A 31.6 Allowed Normal 0.84\n28.3\n25.3\n22.5\n3338 Refrigerant gas R 407A 31.3 Allowed Normal 0.95\n28.1\n25.1\n22.4\n3339 Refrigerant gas R 407B 33.0 Allowed Normal 0.95\n29.6\n26.5\n23.6\n3340 Refrigerant gas R 407C 29.9 Allowed Normal 0.95\n26.8\n23.9\n21.3\n3500 Chemical under pressure, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)\n3501 Chemical under pressure, flammable, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)\n3502 Chemical under pressure, toxic, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)\n3503 Chemical under pressure, corrosive, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)\n3504 Chemical under pressure, flammable, toxic, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)\n3505 Chemical under pressure, flammable, corrosive, n.o.s See MAWP definition in § 178.276(a) Allowed § 178.276(e)(3) See TP4 in § 172.102(c)","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS","PART 173—SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS","Subpart G—Gases; Preparation and Packaging"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"aa38ab475972c868ca595f86b53c02ae9e3ad589afc905a3f85f4c52ab7d03d9","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-173.312","next":"us/49-cfr-173.314"},"notice":"GroundRules: Original legal text. Not legal advice."}