Emergency Response Guidebook (ERG)

This is an online version of the 2008 Emergency Response Guidebook (ERG) which is produced by the USDOT for first responders during the initial phase of a Dangerous goods/Hazardous Materials incident. Have you ever wondered what those four digit numbers on the placards on the side of trucks and rail cars mean? Our online ERG will give you your answer.

Table of Water-Reactive Materials Which Produce Toxic Gases

UN#GuideName of MaterialTIH Gas(es) Produced
Current as of: Oct. 2, 2011
1305155PVinyltrichlorosilane, stabilizedHCl
1340139Phosphorus pentasulfide, free from yellow and white PhosphorusH2S
1340139Phosphorus pentasulphide, free from yellow and white PhosphorusH2S
1360139Calcium phosphidePH3
1384135Sodium dithioniteH2S, SO2
1384135Sodium hydrosulfiteH2S, SO2
1384135Sodium hydrosulphiteH2S, SO2
1397139Aluminum phosphidePH3
1412139Lithium amideNH3
1419139Magnesium aluminum phosphidePH3
1432139Sodium phosphidePH3
1541155Acetone cyanohydrin, stabilizedHCN
1680157Potassium cyanideHCN
1680157Potassium cyanide, solidHCN
1689157Sodium cyanideHCN
1689157Sodium cyanide, solidHCN
1716156Acetyl bromideHBr
1717155Acetyl chlorideHCl
1724155Allyltrichlorosilane, stabilizedHCl
1725137Aluminum bromide, anhydrousHBr
1726137Aluminum chloride, anhydrousHCl
1732157Antimony pentafluorideHF
1741125Boron trichlorideHCl
1745144Bromine pentafluorideHF, Br2
1746144Bromine trifluorideHF, Br2
1752156Chloroacetyl chlorideHCl
1754137Chlorosulfonic acidHCl
1754137Chlorosulfonic acid and Sulfur trioxide mixtureHCl
1754137Chlorosulphonic acidHCl
1754137Chlorosulphonic acid and Sulphur trioxide mixtureHCl
1754137Sulfur trioxide and Chlorosulfonic acid mixtureHCl
1754137Sulphur trioxide and Chlorosulphonic acid mixtureHCl
1758137Chromium oxychlorideHCl
1765156Dichloroacetyl chlorideHCl
1777137Fluorosulfonic acidHF
1777137Fluorosulphonic acidHF
1806137Phosphorus pentachlorideHCl
1808137Phosphorus tribromideHBr
1809137Phosphorus trichlorideHCl
1809137Phosphorus trichlorideHCl
1810137Phosphorus oxychlorideHCl
1815132Propionyl chlorideHCl
1818157Silicon tetrachlorideHCl
1828137Sulfur chloridesHCl, SO2, H2S
1828137Sulphur chloridesHCl, SO2, H2S
1834137Sulfuryl chlorideHCl
1834137Sulphuryl chlorideHCl
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 acidNO2
2308157Nitrosylsulfuric acid, liquidNO2
2308157Nitrosylsulfuric acid, solidNO2
2308157Nitrosylsulphuric acidNO2
2308157Nitrosylsulphuric acid, liquidNO2
2308157Nitrosylsulphuric acid, solidNO2
2353132Butyryl chlorideHCl
2395132Isobutyryl chlorideHCl
2495144Iodine pentafluorideHF
2691137Phosphorus pentabromideHBr
2692157Boron tribromideHBr
2806138Lithium nitrideNH3
2977166Radioactive material, Uranium hexafluoride, fissileHF
2977166Uranium hexafluoride, fissile containing more than 1% Uranium-235HF
2978166Radioactive material, Uranium hexafluorideHF
2978166Uranium hexafluorideHF
2978166Uranium hexafluoride non fissile or fissile-exceptedHF
2985155Chlorosilanes, flammable, corrosive, n.o.s.HCl
2985155Chlorosilanes, n.o.s.HCl
2986155Chlorosilanes, corrosive, flammable, n.o.s.HCl
2986155Chlorosilanes, n.o.s.HCl
2987156Chlorosilanes, corrosive, n.o.s.HCl
2987156Chlorosilanes, n.o.s.HCl
2988139Chlorosilanes, n.o.s.HCl
2988139Chlorosilanes, water-reactive, flammable, corrosive, n.o.s.HCl
3048157Aluminum phosphide pesticidePH3
3049138Metal alkyl halides, n.o.s.HCl
3049138Metal alkyl halides, water-reactive, n.o.s.HCl
3049138Metal aryl halides, n.o.s.HCl
3049138Metal aryl halides, water-reactive, n.o.s.HCl
3052135Aluminum alkyl halidesHCl
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
9191143Chlorine dioxide, hydrate, frozenCl2

Data Source for our online 2008 ERG

This information was compiled from the 2008 Emergency Response Guidebook (2008 ERG) which is produced by the U.S. Department of Transportation.

(Data last updated/verified: Oct. 2, 2011)

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To ensure regulatory compliance when transporting hazardous materials or dangerous goods, one must receive proper training and certification from a qualified instructor and refer to the current year's Code of Federal Regulations Title 49 (49CFR) or your country's shipping regulations. In matters regarding workplace safety, refer to current OSHA regulations (29CFR) and NIOSH guidelines or your own country's health and safety regulations. No one should ever enter into a hazardous environment without proper training from qualified instructors.

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