{"operation":"document","citation":"ERG 2024, Table 2: Water-Reactive Materials Producing Toxic Gases","title":"Table 2: Water-Reactive Materials Producing Toxic Gases","source_type":"guidance","agency":"U.S. DOT / Transport Canada / SICT","status":"guidance","official":true,"published_on":"2024-04-04","effective_on":null,"summary":"Official ERG2024 table 2: water-reactive materials producing toxic gases guidance, pages 336-341.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-erg-2024-green-table-2.json","markdown":"https://regulus.evalyn.ai/document/phmsa-erg-2024-green-table-2.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-erg-2024-green-table-2","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2024-04/ERG2024-Eng-Web-a.pdf#page=336","body":"HOW TO USE TABLE 2 – WATER-REACTIVE MATERIALS\nWHICH PRODUCE TOXIC GASES\nTable 2 lists materials which produce large amounts of Toxic Inhalation Hazard (TIH) (PIH\nin the US) gases when spilled in water, and identifies the TIH gases produced.\nThe materials are listed by order of ID number.\nThese water-reactive materials are easily identified in Table 1 as their names are\nimmediately followed by (when spilled in water).\nNote 1: Note 2: Note 3: The TIH gases indicated in Table 2 are for information purposes only. In Table\n1, the initial isolation and protective action distances have already taken into\nconsideration the TIH gases produced.\nFor example: Table 2 indicates that UN1689 sodium cyanide, when spilled\nin water, will generate hydrogen cyanide gas (HCN). In Table 1, you must\nrefer to the distances for sodium cyanide and not the distances for hydrogen\ncyanide gas.\nSome water-reactive materials are also TIH materials themselves (e.g., UN1746\n(Bromine trifluoride), UN1836 (Thionyl chloride)). In these instances, two entries\nare provided in Table 1 for land-based and water-based spills. If a water-reactive\nmaterial only has one entry in Table 1 for (when spilled in water), and the\nproduct is NOT spilled in water, Tables 1 and 2 do NOT apply. Refer only to the\nappropriate Orange Guide.\nMaterials classified as a Division 4.3 are substances that, on contact with water,\nare liable to become spontaneously FLAMMABLE or give off FLAMMABLE or\nsometimes TOXIC gases in dangerous quantities. For the purpose of this table,\nwater-reactive materials are materials that generate substantial quantities of\nTOXIC gases rapidly after a spill into water; therefore, a material classified as\na Division 4.3 will not always be included in Table 2.\nPage 334\n\nTABLE 2 - WATER-REACTIVE MATERIALS WHICH PRODUCE TOXIC GASES\nMaterials Which Produce Large Amounts of Toxic-by-Inhalation (TIH)\n(PIH in the US) Gas(es) When Spilled in Water\nID\nNo.\nGuide\nNo.\nName of Material TIH Gas(es)\nProduced\n1162 155 Dimethyldichlorosilane HCl\n1183 139 Ethyldichlorosilane HCl\n1196 155 Ethyltrichlorosilane HCl\n1242 139 Methyldichlorosilane HCl\n1250 155 Methyltrichlorosilane HCl\n1295 139 Trichlorosilane HCl\n1298 155 Trimethylchlorosilane HCl\n1305 155P Vinyltrichlorosilane HCl\n1340 139 Phosphorus pentasulfide, free from yellow and white phosphorus H2S\n1340 139 Phosphorus pentasulphide, free from yellow and white phosphorus H2S\n1360 139 Calcium phosphide PH3\n1384 135 Sodium dithionite H2S SO2\n1384 135 Sodium hydrosulfite H2S SO2\n1384 135 Sodium hydrosulphite H2S SO2\n1390 139 Alkali metal amides NH3\n1397 139 Aluminum phosphide PH3\n1419 139 Magnesium aluminum phosphide PH3\n1432 139 Sodium phosphide PH3\n1541 156 Acetone cyanohydrin, stabilized HCN\n1680 157 Potassium cyanide, solid HCN\n1689 157 Sodium cyanide, solid HCN\n1716 156 Acetyl bromide HBr\n1717 155 Acetyl chloride HCl\n1724 155 Allyltrichlorosilane, stabilized HCl\nTABLE 2\nChemical Symbols for TIH (PIH in the US) Gases:\nBr2 Bromine\nHF Hydrogen fluoride\nCl2 Chlorine\nHI Hydrogen iodide\nHBr Hydrogen bromide\nH2S Hydrogen sulfide\nHCl Hydrogen chloride\nH2S Hydrogen sulphide\nHCN Hydrogen cyanide\nNH3 Ammonia\nUse this list only when material is spilled in water.\nNO2 Nitrogen dioxide\nPH3 Phosphine\nSO2 Sulfur dioxide\nSO2 Sulphur dioxide\nPage 335\n\nTABLE 2 - WATER-REACTIVE MATERIALS WHICH PRODUCE TOXIC GASES\nMaterials Which Produce Large Amounts of Toxic-by-Inhalation (TIH)\n(PIH in the US) Gas(es) When Spilled in Water\nID\nNo.\nGuide\nNo.\nName of Material TIH Gas(es)\nProduced\n1725 137 Aluminum bromide, anhydrous HBr\n1726 137 Aluminum chloride, anhydrous HCl\n1728 156 Amyltrichlorosilane HCl\n1732 157 Antimony pentafluoride HF\n1741 125 Boron trichloride HCl\n1745 144 Bromine pentafluoride HF Br2\n1746 144 Bromine trifluoride HF Br2\n1747 155 Butyltrichlorosilane HCl\n1752 156 Chloroacetyl chloride HCl\n1753 156 Chlorophenyltrichlorosilane HCl\n1754 137 Chlorosulfonic acid (with or without sulfur trioxide) HCl\n1754 137 Chlorosulphonic acid (with or without sulphur trioxide) HCl\n1758 137 Chromium oxychloride HCl\n1762 156 Cyclohexenyltrichlorosilane HCl\n1763 156 Cyclohexyltrichlorosilane HCl\n1765 156 Dichloroacetyl chloride HCl\n1766 156 Dichlorophenyltrichlorosilane HCl\n1767 155 Diethyldichlorosilane HCl\n1769 156 Diphenyldichlorosilane HCl\n1771 156 Dodecyltrichlorosilane HCl\n1777 137 Fluorosulfonic acid HF\n1777 137 Fluorosulphonic acid HF\n1781 156 Hexadecyltrichlorosilane HCl\n1784 156 Hexyltrichlorosilane HCl\nChemical Symbols for TIH (PIH in the US) Gases:\nBr2 Bromine\nHF Hydrogen fluoride\nCl2 Chlorine\nHI Hydrogen iodide\nHBr Hydrogen bromide\nH2S Hydrogen sulfide\nHCl Hydrogen chloride\nH2S Hydrogen sulphide\nHCN Hydrogen cyanide\nNH3 Ammonia\nPage 336\nUse this list only when material is spilled in water.\nNO2 Nitrogen dioxide\nPH3 Phosphine\nSO2 Sulfur dioxide\nSO2 Sulphur dioxide\n\nTABLE 2 - WATER-REACTIVE MATERIALS WHICH PRODUCE TOXIC GASES\nMaterials Which Produce Large Amounts of Toxic-by-Inhalation (TIH)\n(PIH in the US) Gas(es) When Spilled in Water\nID\nNo.\nGuide\nNo.\nName of Material TIH Gas(es)\nProduced\n1799 156 Nonyltrichlorosilane HCl\n1800 156 Octadecyltrichlorosilane HCl\n1801 156 Octyltrichlorosilane HCl\n1804 156 Phenyltrichlorosilane HCl\n1806 137 Phosphorus pentachloride HCl\n1808 137 Phosphorus tribromide HBr\n1809 137 Phosphorus trichloride HCl\n1810 137 Phosphorus oxychloride HCl\n1815 155 Propionyl chloride HCl\n1816 155 Propyltrichlorosilane HCl\n1818 157 Silicon tetrachloride HCl\n1828 137 Sulfur chlorides HCl SO2 H2S\n1828 137 Sulphur chlorides HCl SO2 H2S\n1834 137 Sulfuryl chloride HCl\n1834 137 Sulphuryl chloride HCl\n1836 137 Thionyl chloride HCl SO2\n1838 137 Titanium tetrachloride HCl\n1898 156 Acetyl iodide HI\n1923 135 Calcium dithionite H2S SO2\n1923 135 Calcium hydrosulfite H2S SO2\n1923 135 Calcium hydrosulphite H2S SO2\n1929 135 Potassium dithionite H2S SO2\n1929 135 Potassium hydrosulfite H2S SO2\n1929 135 Potassium hydrosulphite H2S SO2\nTABLE 2\nChemical Symbols for TIH (PIH in the US) Gases:\nBr2 Bromine\nHF Hydrogen fluoride\nCl2 Chlorine\nHI Hydrogen iodide\nHBr Hydrogen bromide\nH2S Hydrogen sulfide\nHCl Hydrogen chloride\nH2S Hydrogen sulphide\nHCN Hydrogen cyanide\nNH3 Ammonia\nUse this list only when material is spilled in water.\nNO2 Nitrogen dioxide\nPH3 Phosphine\nSO2 Sulfur dioxide\nSO2 Sulphur dioxide\nPage 337\n\nTABLE 2 - WATER-REACTIVE MATERIALS WHICH PRODUCE TOXIC GASES\nMaterials Which Produce Large Amounts of Toxic-by-Inhalation (TIH)\n(PIH in the US) Gas(es) When Spilled in Water\nID\nNo.\nGuide\nNo.\nName of Material TIH Gas(es)\nProduced\n1931 171 Zinc dithionite H2S SO2\n1931 171 Zinc hydrosulfite H2S SO2\n1931 171 Zinc hydrosulphite H2S SO2\n2004 135 Magnesium diamide NH3\n2011 139 Magnesium phosphide PH3\n2012 139 Potassium phosphide PH3\n2013 139 Strontium phosphide PH3\n2308 157 Nitrosylsulfuric acid, liquid NO2\n2308 157 Nitrosylsulphuric acid, liquid NO2\n2353 155 Butyryl chloride HCl\n2395 155 Isobutyryl chloride HCl\n2434 156 Dibenzyldichlorosilane HCl\n2435 156 Ethylphenyldichlorosilane HCl\n2437 156 Methylphenyldichlorosilane HCl\n2495 144 Iodine pentafluoride HF\n2691 137 Phosphorus pentabromide HBr\n2692 157 Boron tribromide HBr\n2806 139 Lithium nitride NH3\n2965 139 Boron trifluoride dimethyl etherate HF\n2977 166 Radioactive material, uranium hexafluoride, fissile HF\n2977 166 Uranium hexafluoride, radioactive material, fissile HF\n2978 166 Radioactive material, uranium hexafluoride, non fissile or\nHF\nfissile‑excepted\nChemical Symbols for TIH (PIH in the US) Gases:\nBr2 Bromine\nHF Hydrogen fluoride\nCl2 Chlorine\nHI Hydrogen iodide\nHBr Hydrogen bromide\nH2S Hydrogen sulfide\nHCl Hydrogen chloride\nH2S Hydrogen sulphide\nHCN Hydrogen cyanide\nNH3 Ammonia\nPage 338\nUse this list only when material is spilled in water.\nNO2 Nitrogen dioxide\nPH3 Phosphine\nSO2 Sulfur dioxide\nSO2 Sulphur dioxide\n\nTABLE 2 - WATER-REACTIVE MATERIALS WHICH PRODUCE TOXIC GASES\nMaterials Which Produce Large Amounts of Toxic-by-Inhalation (TIH)\n(PIH in the US) Gas(es) When Spilled in Water\nID\nNo.\nGuide\nNo.\nName of Material TIH Gas(es)\nProduced\n2978 166 Uranium hexafluoride, radioactive material, non fissile or\nHF\nfissile‑excepted\n2985 155 Chlorosilanes, flammable, corrosive, n.o.s. 2986 155 Chlorosilanes, corrosive, flammable, n.o.s. 2987 156 Chlorosilanes, corrosive, n.o.s. 2988 139 Chlorosilanes, water-reactive, flammable, corrosive, n.o.s. HCl\n3048 157 Aluminum phosphide pesticide 3361 156 Chlorosilanes, poisonous, corrosive, n.o.s. 3361 156 Chlorosilanes, toxic, corrosive, n.o.s. 3362 155 Chlorosilanes, poisonous, corrosive, flammable, n.o.s. HCl\n3362 155 Chlorosilanes, toxic, corrosive, flammable, n.o.s. 3456 157 Nitrosylsulfuric acid, solid 3456 157 Nitrosylsulphuric acid, solid 3507 166 Uranium hexafluoride, radioactive material, excepted\nHCl\nHCl\nHCl\nPH3\nHCl\nHCl\nHCl\nNO2\nNO2\nHF\npackage, less than 0.1 kg per package, non-fissile or\nfissile-excepted\n9191 143 Chlorine dioxide, hydrate, frozen Cl2\nTABLE 2\nChemical Symbols for TIH (PIH in the US) Gases:\nBr2 Bromine\nHF Hydrogen fluoride\nCl2 Chlorine\nHI Hydrogen iodide\nHBr Hydrogen bromide\nH2S Hydrogen sulfide\nHCl Hydrogen chloride\nH2S Hydrogen sulphide\nHCN Hydrogen cyanide\nNH3 Ammonia\nUse this list only when material is spilled in water.\nNO2 Nitrogen dioxide\nPH3 Phosphine\nSO2 Sulfur dioxide\nSO2 Sulphur dioxide\nPage 339","truncated":false,"body_characters":9262}