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Hazard class 3

Class 3: Flammable liquid

Liquids that give off vapors that can ignite — for example gasoline, acetone, and many solvents. Below is every Class 3 entry in 49 CFR §172.101 that has a UN/NA number — 416 entries.

IDProper shipping nameClassPG
NA1057Lighters, non-pressurized, containing flammable liquid,3II
UN1088Acetal3II
UN1089Acetaldehyde3I
UN1090Acetone3II
UN1091Acetone oils3II
UN1093Acrylonitrile, stabilized3I
UN1099Allyl bromide3I
UN1100Allyl chloride3I
UN1104Amyl acetates3III
UN1105Pentanols3II
UN1106Amylamines3II
UN1107Amyl chloride3II
UN11081-Pentene (n-amylene)3I
UN1109Amyl formates3III
UN1110n-Amyl methyl ketone3III
UN1111Amyl mercaptan3II
UN1112Amyl nitrate3III
UN1113Amyl nitrite3II
UN1114Benzene3II
UN1120Butanols3II
UN1123Butyl acetates3II
UN1125n-Butylamine3II
UN11261-Bromobutane3II
UN1127Chlorobutanes3II
UN1128n-Butyl formate3II
UN1129Butyraldehyde3II
UN1130Camphor oil3III
UN1131Carbon disulfide3I
UN1133Adhesives, containing a flammable liquid3I
UN1134Chlorobenzene3III
UN1136Coal tar distillates, flammable3II
UN1139Coating solution (includes surface treatments or coatings used for industrial or other purposes such as vehicle undercoating, drum or barrel lining)3I
UN1144Crotonylene3I
UN1145Cyclohexane3II
UN1146Cyclopentane3II
UN1147Decahydronaphthalene3III
UN1148Diacetone alcohol3II
UN1149Dibutyl ethers3III
UN11501,2-Dichloroethylene3II
UN1152Dichloropentanes3III
UN1153Ethylene glycol diethyl ether3II
UN1154Diethylamine3II
UN1155Diethyl ether or Ethyl ether3I
UN1156Diethyl ketone3II
UN1157Diisobutyl ketone3III
UN1158Diisopropylamine3II
UN1159Diisopropyl ether3II
UN1160Dimethylamine solution3II
UN1161Dimethyl carbonate3II
UN1162Dimethyldichlorosilane3II
UN1164Dimethyl sulfide3II
UN1165Dioxane3II
UN1166Dioxolane3II
UN1167Divinyl ether, stabilized3I
UN1170Ethanol or Ethyl alcohol or Ethanol solutions or Ethyl alcohol solutions3II
UN1171Ethylene glycol monoethyl ether3III
UN1172Ethylene glycol monoethyl ether acetate3III
UN1173Ethyl acetate3II
UN1175Ethylbenzene3II
UN1176Ethyl borate3II
UN11772-Ethylbutyl acetate3III
UN11782-Ethylbutyraldehyde3II
UN1179Ethyl butyl ether3II
UN1180Ethyl butyrate3III
UN1184Ethylene dichloride3II
UN1188Ethylene glycol monomethyl ether3III
UN1189Ethylene glycol monomethyl ether acetate3III
UN1190Ethyl formate3II
UN1191Octyl aldehydes3III
UN1192Ethyl lactate3III
UN1193Ethyl methyl ketone or Methyl ethyl ketone3II
UN1194Ethyl nitrite solutions3I
UN1195Ethyl propionate3II
UN1196Ethyltrichlorosilane3II
UN1197Extracts, liquid, for flavor or aroma3II
UN1198Formaldehyde solutions, flammable3III
UN1201Fusel oil3II
UN1202Diesel fuel3III
UN1202Gas oil3III
UN1202Heating oil, light3III
UN1203Gasoline includes gasoline mixed with ethyl alcohol, with not more than 10% alcohol3II
UN1204Nitroglycerin solution in alcohol with not more than 1 percent nitroglycerin3II
UN1206Heptanes3II
UN1207Hexaldehyde3III
UN1208Hexanes3II
UN1210Printing ink, flammable or Printing ink related material (including printing ink thinning or reducing compound), flammable3I
UN1212Isobutanol or Isobutyl alcohol3III
UN1213Isobutyl acetate3II
UN1214Isobutylamine3II
UN1216Isooctenes3II
UN1218Isoprene, stabilized3I
UN1219Isopropanol or Isopropyl alcohol3II
UN1220Isopropyl acetate3II
UN1221Isopropylamine3I
UN1222Isopropyl nitrate3II
UN1223Kerosene3III
UN1224Ketones, liquid, n.o.s.3I
UN1228Mercaptans, liquid, flammable, toxic, n.o.s. or Mercaptan mixtures, liquid, flammable, toxic, n.o.s.3II
UN1229Mesityl oxide3III
UN1230Methanol3II
UN1231Methyl acetate3II
UN1233Methylamyl acetate3III
UN1234Methylal3II
UN1235Methylamine, aqueous solution3II
UN1237Methyl butyrate3II
UN1243Methyl formate3I
UN1245Methyl isobutyl ketone3II
UN1246Methyl isopropenyl ketone, stabilized3II
UN1247Methyl methacrylate monomer, stabilized3II
UN1248Methyl propionate3II
UN1249Methyl propyl ketone3II
UN1250Methyltrichlorosilane3II
UN1261Nitromethane3II
UN1262Octanes3II
UN1263Paint (including paint, lacquer, enamel, stain, shellac solutions, varnish, polish, liquid filler and liquid lacquer base)3I
UN1263Paint related material including paint thinning, drying, removing, or reducing compound3I
UN1264Paraldehyde3III
UN1265Pentanes3I
UN1266Perfumery products with flammable solvents3II
UN1267Petroleum crude oil3I
UN1268Petroleum distillates, n.o.s. or Petroleum products, n.o.s.3I
NA1270Petroleum oil3I
UN1272Pine oil3III
UN1274n-Propanol or Propyl alcohol, normal3II
UN1275Propionaldehyde3II
UN1276n-Propyl acetate3II
UN1277Propylamine3II
UN12781-Chloropropane3II
UN12791,2-Dichloropropane3II
UN1280Propylene oxide3I
UN1281Propyl formates3II
UN1282Pyridine3II
UN1286Rosin oil3II
UN1287Rubber solution3II
UN1288Shale oil3I
UN1289Sodium methylate solutions in alcohol3II
UN1292Tetraethyl silicate3III
UN1293Tinctures, medicinal3II
UN1294Toluene3II
UN1296Triethylamine3II
UN1297Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass3I
UN1298Trimethylchlorosilane3II
UN1299Turpentine3III
UN1300Turpentine substitute3I
UN1301Vinyl acetate, stabilized3II
UN1302Vinyl ethyl ether, stabilized3I
UN1303Vinylidene chloride, stabilized3I
UN1304Vinyl isobutyl ether, stabilized3II
UN1305Vinyltrichlorosilane3II
UN1306Wood preservatives, liquid3II
UN1307Xylenes3II
UN1308Zirconium suspended in a liquid3I
UN1648Acetonitrile3II
UN1717Acetyl chloride3II
UN1723Allyl iodide3II
UN1815Propionyl chloride3II
UN1862Ethyl crotonate3II
UN1863Fuel, aviation, turbine engine3I
UN1865n-Propyl nitrate3II
UN1866Resin Solution, flammable3I
UN1891Ethyl bromide3II
UN1914Butyl propionates3III
UN1915Cyclohexanone3III
UN1917Ethyl acrylate, stabilized3II
UN1918Isopropylbenzene3III
UN1919Methyl acrylate, stabilized3II
UN1920Nonanes3III
UN1921Propyleneimine, stabilized3I
UN1922Pyrrolidine3II
UN1986Alcohols, flammable, toxic n.o.s3I
NA1987Denatured alcohol3II
UN1987Alcohols, n.o.s.3I
UN1988Aldehydes, flammable, toxic, n.o.s.3I
UN1989Aldehydes, n.o.s.3I
UN1991Chloroprene, stabilized3I
UN1992Flammable liquids, toxic, n.o.s.3I
NA1993Compounds, cleaning liquid3I
NA1993Compounds, tree killing, liquid or Compounds, weed killing, liquid3I
NA1993Diesel fuel3III
NA1993Fuel oil (No. 1, 2, 4, 5, or 6)3III
UN1993Flammable liquids, n.o.s.3I
NA1999Asphalt, at or above its flash point3III
UN1999Tars, liquid including road oils and cutback bitumens3II
UN2045Isobutyraldehyde or Isobutyl aldehyde3II
UN2046Cymenes3III
UN2047Dichloropropenes3II
UN2048Dicyclopentadiene3III
UN2049Diethylbenzene3III
UN2050Diisobutylene, isomeric compounds3II
UN2052Dipentene3III
UN2053Methyl isobutyl carbinol3III
UN2055Styrene monomer, stabilized3III
UN2056Tetrahydrofuran3II
UN2057Tripropylene3II
UN2058Valeraldehyde3II
UN2059Nitrocellulose, solution, flammable with not more than 12.6 percent nitrogen, by mass, and not more than 55 percent nitrocellulose3I
UN2219Allyl glycidyl ether3III
UN2222Anisole3III
UN2227n-Butyl methacrylate, stabilized3III
UN2234Chlorobenzotrifluorides3III
UN2238Chlorotoluenes3III
UN2241Cycloheptane3II
UN2242Cycloheptene3II
UN2243Cyclohexyl acetate3III
UN2244Cyclopentanol3III
UN2245Cyclopentanone3III
UN2246Cyclopentene3II
UN2247n-Decane3III
UN2251Bicyclo [2,2,1] hepta-2,5-diene, stabilized or 2,5-Norbornadiene, stabilized3II
UN22521,2-Dimethoxyethane3II
UN2256Cyclohexene3II
UN2260Tripropylamine3III
UN2263Dimethylcyclohexanes3II
UN2265N,N-Dimethylformamide3III
UN2266Dimethyl-N-propylamine3II
UN2270Ethylamine, aqueous solution with not less than 50 percent but not more than 70 percent ethylamine3II
UN2271Ethyl amyl ketone3III
UN22752-Ethylbutanol3III
UN22762-Ethylhexylamine3III
UN2277Ethyl methacrylate, stabilized3II
UN2278n-Heptene3II
UN2282Hexanols3III
UN2283Isobutyl methacrylate, stabilized3III
UN2284Isobutyronitrile3II
UN2286Pentamethylheptane3III
UN2287Isoheptenes3II
UN2288Isohexenes3II
UN22934-Methoxy-4-methylpentan-2-one3III
UN2296Methylcyclohexane3II
UN2297Methylcyclohexanone3III
UN2298Methylcyclopentane3II
UN23012-Methylfuran3II
UN23025-Methylhexan-2-one3III
UN2303Isopropenylbenzene3III
UN2309Octadiene3II
UN2310Pentane-2,4-dione3III
UN2313Picolines3III
UN2319Terpene hydrocarbons, n.o.s.3III
UN2323Triethyl phosphite3III
UN2324Triisobutylene3III
UN23251,3,5-Trimethylbenzene3III
UN2329Trimethyl phosphite3III
UN2330Undecane3III
UN2332Acetaldehyde oxime3III
UN2333Allyl acetate3II
UN2335Allyl ethyl ether3II
UN2336Allyl formate3I
UN2338Benzotrifluoride3II
UN23392-Bromobutane3II
UN23402-Bromoethyl ethyl ether3II
UN23411-Bromo-3-methylbutane3III
UN2342Bromomethylpropanes3II
UN23432-Bromopentane3II
UN2344Bromopropanes3II
UN23453-Bromopropyne3II
UN2346Butanedione3II
UN2347Butyl mercaptan3II
UN2348Butyl acrylates, stabilized3III
UN2350Butyl methyl ether3II
UN2351Butyl nitrites3I
UN2352Butyl vinyl ether, stabilized3II
UN2353Butyryl chloride3II
UN2354Chloromethyl ethyl ether3II
UN23562-Chloropropane3I
UN2358Cyclooctatetraene3II
UN2359Diallylamine3II
UN2360Diallylether3II
UN2361Diisobutylamine3III
UN23621,1-Dichloroethane3II
UN2363Ethyl mercaptan3I
UN2364n-Propyl benzene3III
UN2366Diethyl carbonate3III
UN2367alpha-Methylvaleraldehyde3II
UN2368alpha-Pinene3III
UN23701-Hexene3II
UN2371Isopentenes3I
UN23721,2-Di-(dimethylamino)ethane3II
UN2373Diethoxymethane3II
UN23743,3-Diethoxypropene3II
UN2375Diethyl sulfide3II
UN23762,3-Dihydropyran3II
UN23771,1-Dimethoxyethane3II
UN23782-Dimethylaminoacetonitrile3II
UN23791, 3-Dimethylbutylamine3II
UN2380Dimethyldiethoxysilane3II
UN2381Dimethyl disulfide3II
UN2383Dipropylamine3II
UN2384Di-n-propyl ether3II
UN2385Ethyl isobutyrate3II
UN23861-Ethylpiperidine3II
UN2387Fluorobenzene3II
UN2388Fluorotoluenes3II
UN2389Furan3I
UN23902-Iodobutane3II
UN2391Iodomethylpropanes3II
UN2392Iodopropanes3III
UN2393Isobutyl formate3II
UN2394Isobutyl propionate3III
UN2395Isobutyryl chloride3II
UN2396Methacrylaldehyde, stabilized3II
UN23973-Methylbutan-2-one3II
UN2398Methyl tert-butyl ether3II
UN23991-Methylpiperidine3II
UN2400Methyl isovalerate3II
UN2402Propanethiols3II
UN2403Isopropenyl acetate3II
UN2404Propionitrile3II
UN2405Isopropyl butyrate3III
UN2406Isopropyl isobutyrate3II
UN2409Isopropyl propionate3II
UN24101,2,3,6-Tetrahydropyridine3II
UN2411Butyronitrile3II
UN2412Tetrahydrothiophene3II
UN2413Tetrapropylorthotitanate3III
UN2414Thiophene3II
UN2416Trimethyl borate3II
UN2436Thioacetic acid3II
UN24562-Chloropropene3I
UN24572,3-Dimethylbutane3II
UN2458Hexadienes3II
UN24592-Methyl-1-butene3I
UN24602-Methyl-2-butene3II
UN2461Methylpentadienes3II
UN2478Isocyanates, flammable, toxic, n.o.s. or Isocyanate solutions, flammable, toxic, n.o.s. flash point less than 23 degrees C3II
UN2493Hexamethyleneimine3II
UN24981,2,3,6-Tetrahydrobenzaldehyde3III
UN2514Bromobenzene3III
UN2520Cyclooctadienes3III
UN2524Ethyl orthoformate3III
UN2526Furfurylamine3III
UN2527Isobutyl acrylate, stabilized3III
UN2528Isobutyl isobutyrate3III
UN2529Isobutyric acid3III
UN25354-Methylmorpholine or n-methylmorpholine3II
UN2536Methyltetrahydrofuran3II
UN2541Terpinolene3III
UN2554Methyl allyl chloride3II
UN25602-Methylpentan-2-ol3III
UN25613-Methyl-1-butene3I
UN2603Cycloheptatriene3II
UN2607Acrolein dimer, stabilized3III
UN2608Nitropropanes3III
UN2610Triallylamine3III
UN2612Methyl propyl ether3II
UN2614Methallyl alcohol3III
UN2615Ethyl propyl ether3II
UN2616Triisopropyl borate3II
UN2617Methylcyclohexanols, flammable3III
UN2618Vinyltoluenes, stabilized3III
UN2620Amyl butyrates3III
UN2621Acetyl methyl carbinol3III
UN2622Glycidaldehyde3II
UN26843-Diethyamino-propylamine3III
UN2707Dimethyldioxanes3II
UN2709Butyl benzenes3III
UN2710Dipropyl ketone3III
UN2733Amine, flammable, corrosive, n.o.s. or Polyamines, flammable, corrosive, n.o.s3I
UN2749Tetramethylsilane3I
UN27521,2-Epoxy-3-ethoxypropane3III
UN2758Carbamate pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2760Arsenical pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2762Organochlorine pesticides liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2764Triazine pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2772Thiocarbamate pesticide, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2776Copper based pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2778Mercury based pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2780Substituted nitrophenol pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2782Bipyridilium pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2784Organophosphorus pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2787Organotin pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN2838Vinyl butyrate, stabilized3II
UN2840Butyraldoxime3III
UN2841Di-n-amylamine3III
UN2842Nitroethane3III
UN2850Propylene tetramer3III
UN2924Flammable liquids, corrosive, n.o.s.3I
UN2933Methyl 2-chloropropionate3III
UN2934Isopropyl 2-chloropropionate3III
UN2935Ethyl 2-chloropropionate3III
UN2943Tetrahydrofurfurylamine3III
UN2945N-Methylbutylamine3II
UN2947Isopropyl chloroacetate3III
UN2983Ethylene oxide and propylene oxide mixtures, with not more than 30 percent ethylene oxide3I
UN2985Chlorosilanes, flammable, corrosive, n.o.s3II
UN3021Pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN30221,2-Butylene oxide, stabilized3II
UN3024Coumarin derivative pesticides, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN3054Cyclohexyl mercaptan3III
UN3056n-Heptaldehyde3III
UN3064Nitroglycerin, solution in alcohol, with more than 1 percent but not more than 5 percent nitroglycerin3II
UN3065Alcoholic beverages3II
UN30921-Methoxy-2-propanol3III
UN3165Aircraft hydraulic power unit fuel tank (containing a mixture of anhydrous hydrazine and monomethyl hydrazine) (M86 fuel)3I
UN3248Medicine, liquid, flammable, toxic, n.o.s3II
UN3256Elevated temperature liquid, flammable, n.o.s., with flash point above 37.8 C, at or above its flash point3III
UN3269Polyester resin kit, liquid base material3—
UN3271Ethers, n.o.s.3II
UN3272Esters, n.o.s.3II
UN3273Nitriles, flammable, toxic, n.o.s.3I
UN3274Alcoholates solution, n.o.s., in alcohol3II
UN3286Flammable liquid, toxic, corrosive, n.o.s.3I
UN3295Hydrocarbons, liquid, n.o.s.3I
UN3336Mercaptans, liquid, flammable, n.o.s. or Mercaptan mixture, liquid, flammable, n.o.s3I
UN3343Nitroglycerin mixture, desensitized, liquid, flammable, n.o.s. with not more than 30 percent nitroglycerin, by mass3—
UN3346Phenoxyacetic acid derivative pesticide, liquid, flammable, toxic flash point less than 23 degrees C3I
UN3350Pyrethroid pesticide, liquid, flammable, toxic, flash point less than 23 degrees C3I
UN3357Nitroglycerin mixture, desensitized, liquid, n.o.s. with not more than 30% nitroglycerin, by mass3II
UN33712-Methylbutanal3II
UN3379Desensitized explosive, liquid, n.o.s.3I
UN3469Paint, flammable, corrosive, (including paint , lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base)3I
UN3469Paint related material, flammable, corrosive (including paint thinning or reducing compound)3I
UN3473Fuel cell cartridges or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing flammable liquids3—
UN3475Ethanol and gasoline mixture or Ethanol and motor spirit mixture or Ethanol and petrol mixture, with more than 10% ethanol3II
UN3494Petroleum sour crude oil, flammable, toxic3I
UN3528Engine, internal combustion, flammable liquid powered or Engine, fuel cell, flammable liquid powered or Machinery, internal combustion, flammable liquid powered or Machinery, fuel cell, flammable liquid powered3—
UN3540Articles containing flammable liquid, n.o.s.3—
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Source: 49 CFR §172.101 via eCFR.gov, current as of Oct 23, 2026. Reference only.