UN numbers from UN1901 to UN2000 as assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods are as follows:
| UN Number | Class | Proper Shipping Name |
|---|---|---|
| UN 1901 | ? | (UN No. no longer in use) |
| UN 1902 | 8 | Diisooctyl acid phosphate |
| UN 1903 | 8 | Disinfectants, liquid, corrosive, n.o.s. |
| UN 1904 | ? | (UN No. no longer in use) Poison Hydrochloride (UN No. no longer in use) |
| UN 1905 | 8 | Selenic Acid |
| UN 1906 | 8 | Sludge Acid |
| UN 1907 | 8 | Soda lime with more than 4 percent sodium hydroxide |
| UN 1908 | 8 | Chlorite solution |
| UN 1909 | ? | (UN No. no longer in use) |
| UN 1910 | 8 | Calcium oxide |
| UN 1911 | 2 | Diborane, compressed |
| UN 1912 | 2 | Methyl chloride and methylene chloride mixtures |
| UN 1913 | 2 | Neon, refrigerated liquid (cryogenic liquid) |
| UN 1914 | 3 | Butyl propionates |
| UN 1915 | 3 | Cyclohexanone |
| UN 1916 | 6.1 | 2,2'-Dichlorodiethyl ether |
| UN 1917 | 3 | Ethyl acrylate, inhibited |
| UN 1918 | 3 | Isopropylbenzene |
| UN 1919 | 3 | Methyl acrylate, inhibited |
| UN 1920 | 3 | Nonanes |
| UN 1921 | 3 | Propyleneimine, inhibited |
| UN 1922 | 3 | Pyrrolidine |
| UN 1923 | 4.2 | Calcium dithionite or Calcium hydrosulfite |
| UN 1924 | ? | (UN No. no longer in use) Ethyl aluminium dichloride (UN No. no longer in use)[1] |
| UN 1925 | ? | (UN No. no longer in use) Ethylaluminium sesquichloride (UN No. no longer in use) |
| UN 1926 | ? | (UN No. no longer in use) Methyl aluminium sesquibromide (UN No. no longer in use) |
| UN 1927 | ? | (UN No. no longer in use) Methyl aluminium sesquichloride (UN No. no longer in use) |
| UN 1928 | 4.3 | Methyl magnesium bromide, in ethyl ether |
| UN 1929 | 4.2 | Potassium dithionite or Potassium hydrosulfite |
| UN 1930 | ? | (UN No. no longer in use) Triisobutyl aluminium (UN No. no longer in use) |
| UN 1931 | 9 | Zinc dithionite or Zinc hydrosulfite |
| UN 1932 | 4.2 | Zirconium scrap |
| UN 1933 to 1934 | ? | (UN No.s no longer in use) |
| UN 1935 | 6.1 | Cyanide solutions, n.o.s. |
| UN 1936 to 1937 | ? | (UN No.s no longer in use) |
| UN 1938 | 8 | Bromoacetic acid, solution or Bromoacetic acid, solid |
| UN 1939 | 8 | Phosphorus oxybromide |
| UN 1940 | 8 | Thioglycolic acid |
| UN 1941 | 9 | Dibromodifluoromethane, R12B2 |
| UN 1942 | 5.1 | Ammonium nitrate, with not more than 0.2 percent of combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance |
| UN 1943 | ? | (UN No. no longer in use) |
| UN 1944 | 4.1 | Matches, safety (book, card, or strike on box) |
| UN 1945 | 4.1 | Matches, wax, Vesta |
| UN 1946 to 1949 | ? | (UN No.s no longer in use) |
| UN 1950 | 2 | Aerosols, corrosive, Packing Group II or III, (each not exceeding 1 L capacity) or Aerosols, flammable (each not exceeding 1 L capacity) or Aerosols, flammable, n.o.s. (engine starting fluid) (each not exceeding 1 L capacity) or Aerosols, nonflammable (each not exceeding 1 L capacity) or Aerosols, toxic, (each not exceeding 1 L capacity) |
| UN 1951 | 2 | Argon, refrigerated liquid (cryogenic liquid) |
| UN 1952 | 2 | Ethylene oxide and carbon dioxide mixtures with not more than 9 percent ethylene oxide |
| UN 1953 | 2 | Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone A, B, C, or D |
| UN 1954 | 2 | Compressed gas, flammable, n.o.s. |
| UN 1955 | 2 | Compressed gas, toxic, n.o.s. Inhalation Hazard Zone A, B, C, or D |
| UN 1956 | 2 | Compressed gas, n.o.s. |
| UN 1957 | 2 | Deuterium, compressed |
| UN 1958 | 2 | 1,2-dichloro-1,1,2,2-tetrafluoroethane or Refrigerant gas R 114 |
| UN 1959 | 2 | 1,1-Difluoroethylene or Refrigerant gas R 1132a |
| UN 1960 | ? | (UN No. no longer in use) Engine starting fluid (UN No. no longer in use) |
| UN 1961 | 2 | Ethane, refrigerated liquid |
| UN 1962 | 2 | Ethylene, compressed |
| UN 1963 | 2 | Helium, refrigerated liquid (cryogenic liquid) |
| UN 1964 | 2 | Hydrocarbon gas mixture, compressed, n.o.s. |
| UN 1965 | 2 | Hydrocarbon gas mixtures, liquefied, n.o.s. |
| UN 1966 | 2 | Liquid hydrogen, refrigerated liquid (cryogenic liquid) |
| UN 1967 | 2 | Insecticide gases, toxic, n.o.s. |
| UN 1968 | 2 | Insecticide gases, n.o.s. |
| UN 1969 | 2 | Isobutane see also Petroleum gases, liquified |
| UN 1970 | 2 | Krypton, refrigerated liquid (cryogenic liquid) |
| UN 1971 | 2 | Methane, compressed or Natural gas, compressed (with high methane content) |
| UN 1972 | 2 | Methane, refrigerated liquid (cryogenic liquid) or Natural gas, refrigerated liquid (cryogenic liquid), with high methane content |
| UN 1973 | 2 | Chlorodifluoromethane and chloropentafluoroethane mixture or Refrigerant gas R 502 with fixed boiling point, with approximately 49 percent chlorodifluoromethane |
| UN 1974 | 2 | Chlorodifluorobromomethane or Refrigerant gas R 12B1 |
| UN 1975 | 2 | Nitric oxide and dinitrogen tetroxide mixtures or Nitric oxide and nitrogen dioxide mixtures |
| UN 1976 | 2 | Octafluorocyclobutane, or Refrigerant gas RC 318 |
| UN 1977 | 2 | Nitrogen, refrigerated liquid cryogenic liquid |
| UN 1978 | 2 | Propane see also Petroleum gases, liquefied |
| UN 1979 | 2 | (UN No. no longer in use) Rare gases, mixtures, compressed (UN No. no longer in use)[2] |
| UN 1980 | 2 | (UN No. no longer in use) Rare gases and oxygen mixtures, compressed (UN No. no longer in use) |
| UN 1981 | 2 | (UN No. no longer in use) Rare gases and nitrogen mixtures, compressed (UN No. no longer in use) |
| UN 1982 | 2 | Tetrafluoromethane, compressed or Refrigerant gas R 14 |
| UN 1983 | 2 | 1-Chloro-2,2,2-trifluoroethane or Refrigerant gas R133a |
| UN 1984 | 2 | Trifluoromethane or Refrigerant gas R 23 |
| UN 1985 | ? | (UN No. no longer in use) |
| UN 1986 | 3 | Alcohols, flammable, toxic, n.o.s. |
| UN 1987 | 3 | Alcohols, (Ethanol), n.o.s. |
| UN 1988 | 3 | Aldehydes, flammable, toxic, n.o.s. |
| UN 1989 | 3 | Aldehydes, n.o.s. |
| UN 1990 | 9 | Benzaldehyde |
| UN 1991 | 3 | Chloroprene, inhibited |
| UN 1992 | 3 | Flammable liquids, toxic, n.o.s. |
| UN 1993 | 3 | Flammable liquids, n.o.s. |
| UN 1994 | 6.1 | Iron pentacarbonyl |
| UN 1995 | ? | |
| UN 1996 to 1998 | ? | (UN No.s no longer in use) |
| UN 1999 | 3 | Tars, liquid including road asphalt and oils, bitumen and cut backs |
| UN 2000 | 4.1 | Celluloid, in block, rods, rolls, sheets, tubes, etc., except scrap |
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s.entry [3]