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  5. Table 2 - Water-Reactive Materials Which Produce Toxic Gases

Table 2 - Water-Reactive Materials Which Produce Toxic Gases

Table 2 lists materials which produce large amounts of Toxic Inhalation Hazard (TIH) (PIH in the US) gases when spilled in water and identifies the TIH gases produced.

The materials are listed by ID number order.

These Water Reactive materials are easily identified in Table 1 as their name is immediately followed by "(when spilled in water)".

Note 1: Some Water Reactive materials are also TIH materials themselves (e.g., Bromine trifluoride (UN1746), Thionyl chloride (UN1836), 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."

Note 2: Materials classified as a Division 4.3 are substances that, on contact with water, are liable to become spontaneously FLAMMABLE or give off FLAMMABLE or sometimes TOXIC gases in dangerous quantities. For the purpose of this table, water reactive materials are materials that generate substantial quantities of TOXIC gases rapidly after a spill into water. Therefore, a material classified as a Division 4.3 will not always be included in Table 2.

Materials Which Produce Large Amounts of Toxic-by-Inhalation (TIH) (PIH in the US) Gas(es) When Spilled in Water
ID No.Guide No.Name of MaterialTIH Gas(es) Produced
1834137Sulphuryl chlorideHCl
1836137Thionyl chlorideHCl  SO2
1838137Titanium tetrachlorideHCl
1898156Acetyl iodideHI
1923135Calcium dithioniteH2S  SO2
1923135Calcium hydrosulfiteH2S  SO2
1923135Calcium hydrosulphiteH2S  SO2
1929135Potassium dithioniteH2S  SO2
1929135Potassium hydrosulfiteH2S  SO2
1929135Potassium hydrosulphiteH2S  SO2
1931171Zinc dithioniteH2S  SO2
1931171Zinc hydrosulfiteH2S  SO2
1931171Zinc hydrosulphiteH2S  SO2
2004135Magnesium diamideNH3
2011139Magnesium phosphidePH3
2012139Potassium phosphidePH3
2013139Strontium phosphidePH3
2308157Nitrosylsulfuric acid, liquidNO2
2308157Nitrosylsulfuric acid, solidNO2
2308157Nitrosylsulphuric acid, liquidNO2
2308157Nitrosylsulphuric acid, solidNO2
2353132Butyryl chlorideHCl
2395132Isobutyryl chlorideHCl
2434156DibenzyldichlorosilaneHCl
2435156EthylphenyldichlorosilaneHCl
2437156MethylphenyldichlorosilaneHCl
2495144Iodine pentafluorideHF
2691137Phosphorus pentabromideHBr
2692157Boron tribromideHBr
2806138Lithium nitrideNH3
2977166Radioactive material, Uranium hexafluoride, fissileHF
2977166Uranium hexafluoride, radioactive material, fissileHF
2978166Radioactive material, Uranium hexafluoride, non fissile or fissile-exceptedHF
2978166Uranium hexafluoride, radioactive material, non fissile or fissile-exceptedHF
2985155Chlorosilanes, flammable, corrosive, n.o.s.HCl
2986155Chlorosilanes, corrosive, flammable, n.o.s.HCl
2987156Chlorosilanes, corrosive, n.o.s.HCl
2988139Chlorosilanes, water-reactive, flammable, corrosive, n.o.s.HCl
3048157Aluminum phosphide pesticidePH3
3049138Metal alkyl halides, water-reactive, n.o.s.HCl
3049138Metal aryl halides, water-reactive, n.o.s.HCl
3052135Aluminum alkyl halides, liquidHCl
3052135Aluminum alkyl halides, solidHCl
3361156Chlorosilanes, poisonous, corrosive, n.o.s.HCl
3361156Chlorosilanes, toxic, corrosive, n.o.s.HCl
3362155Chlorosilanes, poisonous, corrosive, flammable, n.o.s.HCl
3362155Chlorosilanes, toxic, corrosive, flammable, n.o.s.HCl
3456157Nitrosylsulfuric acid, solidNO2
3456157Nitrosylsulphuric acid, solidNO2
3461135Aluminum alkyl halides, solidHCl
3507166Uranium hexafluoride, radioactive material, excepted package, less than 0.1 kg per package, non-fissile or fissile-exceptedHF
9191143Chlorine dioxide, hydrate, frozenCl2


Chemical Symbols for TIH (PIH in the US) Gases:

Br2
Bromine
H2S
Hydrogen sulfide
Cl2
Chlorine
H2S
Hydrogen sulphide
HBr
Hydrogen bromide
NH3
Ammonia
HCl
Hydrogen chloride
NO2
Nitrogen dioxide
HCN
Hydrogen cyanide
PH3
Phosphine
HF
Hydrogen fluoride
SO2
Sulfur dioxide
HI
Hydrogen iodide
SO2
Sulphur dioxide

Use this list only when material is spilled in water.

Date Modified:
2016-08-25