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Identification Number Index

In this table, the substances are listed in numerical order of their 4-digit ID numbers.

The ID number is followed by the 3-digit guide number and the name of material.

An icon in the columns WRM, CWA and TIH indicates that the product is either, a water reactive material, a chemical warfare agent or a toxic inhalation hazard.


If the 3-digit guide number is supplemented with the letter "P", it indicates that the material may undergo violent polymerization if subjected to heat or contamination.

Polymerization generates heat and high pressure buildup inside containers, which may explode or rupture.

Green Highlighted Entries in Yellow Pages

For entries highlighted in green follow these steps:

  • If there is no fire:
    • Go directly to Table 1 (green bordered pages)
    • Look up the ID number and name of material
    • Identify initial isolation and protective action distances
  • If there is a fire or A fire is involved:
    • Also consult the assigned orange guide
    • If applicable, apply the evacuation information shown under Public Safety

NOTE: If the name in Table 1 is shown with "When Spilled In Water", these materials produce large amounts of Toxic Inhalation Hazard (TIH) gases when spilled in water. Some Water Reactive materials are also TIH materials themselves (e.g., Bromine trifluoride (1746), Thionyl chloride (1836), etc.). In these instances, two entries are provided in Table 1 for land-based and water-based spills. If the Water Reactive material is not a TIH and this material is not spilled in water, Table 1 and Table 2 do not apply and safety distances will be found within the appropriate orange guide.

Guide No. Name of Material WRM CWA TIH
 112Ammonium nitrate-fuel oil mixtures   
 158Biological agents   
 112Blasting agent, n.o.s.   
 112Explosives, division 1.1, 1.2, 1.3 or 1.5   
 114Explosives, division 1.4 or 1.6   
1001116Acetylene, dissolved   
1002122Air, compressed   
1003122Air, refrigerated liquid (cryogenic liquid)   
1003122Air, refrigerated liquid (cryogenic liquid), non-pressurized   
1005125Ammonia, anhydrous  Toxic Inhalation Hazard image
1005125Anhydrous ammonia  Toxic Inhalation Hazard image
1006121Argon, compressed   
1008125Boron trifluoride  Toxic Inhalation Hazard image
1008125Boron trifluoride, compressed  Toxic Inhalation Hazard image
1009126Refrigerant gas R-13B1   
1010116PButadienes, stabilized   
1010116PButadienes and hydrocarbon mixture, stabilized   
1011115Butane mixture   
1013120Carbon dioxide   
1013120Carbon dioxide, compressed   
1014122Carbon dioxide and Oxygen mixture, compressed   
1014122Oxygen and Carbon dioxide mixture, compressed   
1015126Carbon dioxide and Nitrous oxide mixture   
1015126Nitrous oxide and Carbon dioxide mixture   
1016119Carbon monoxide  Toxic Inhalation Hazard image
1016119Carbon monoxide, compressed  Toxic Inhalation Hazard image
1017124Chlorine  Toxic Inhalation Hazard image
1018126Refrigerant gas R-22   
1020126Refrigerant gas R-115   
1021126Refrigerant gas R-124   
1022126Refrigerant gas R-13   
1023119Coal gas  Toxic Inhalation Hazard image
1023119Coal gas, compressed  Toxic Inhalation Hazard image
1026119Cyanogen  Toxic Inhalation Hazard image
1026119Cyanogen gas  Toxic Inhalation Hazard image
1028126Refrigerant gas R-12   
1029126Refrigerant gas R-21   
1030115Refrigerant gas R-152a   
1032118Dimethylamine, anhydrous   
1033115Dimethyl ether   
1035115Ethane, compressed   
1037115Ethyl chloride   
1038115Ethylene, refrigerated liquid (cryogenic liquid)   
1039115Ethyl methyl ether   
1039115Methyl ethyl ether   
1040119PEthylene oxide  Toxic Inhalation Hazard image
1040119PEthylene oxide with Nitrogen  Toxic Inhalation Hazard image
1041115Carbon dioxide and Ethylene oxide mixture, with more than 9% but not more than 87% Ethylene oxide   
1041115Carbon dioxide and Ethylene oxide mixtures, with more than 6% Ethylene oxide   
1041115Ethylene oxide and Carbon dioxide mixture, with more than 9% but not more than 87% Ethylene oxide   
1041115Ethylene oxide and Carbon dioxide mixtures, with more than 6 % Ethylene oxide   
1043125Fertilizer, ammoniating solution, with free Ammonia   
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