Hazora · Library
UN/NA 1754 · Chlorosulfonic acid (with or without sulfur trioxide)
UN/NA 1754 · ERG 2024 · Guide 137
- UN/NA
- 1754
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1754 (Chlorosulfonic acid (with or without sulfur trioxide)) under Guide 137, titled “Substances - Water-Reactive - Corrosive”.
Material name
1754 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Chlorosulfonic acid (with or without sulfur trioxide)” and “Chlorosulphonic acid (with or without sulphur trioxide)”. Both use Guide 137, so the number alone is enough to find the guide. On a numbered orange panel, 1754 is the lower number (how to read an orange panel).
ERG 2024 markings for 1754
1754 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has four entries for it: “Chlorosulfonic acid (with or without sulfur trioxide) (when spilled on land)”, “Chlorosulphonic acid (with or without sulphur trioxide) (when spilled on land)”, “Chlorosulfonic acid (with or without sulfur trioxide) (when spilled in water)” and “Chlorosulphonic acid (with or without sulphur trioxide) (when spilled in water)”. Hazora shows those distances in the app, not on this page. One entry covers a spill on land, the other a spill in water. “When spilled in water” means the material produces large amounts of toxic inhalation hazard (TIH) gases when spilled in water. Table 2 (Water-Reactive Materials Which Produce Toxic Gases) lists the gas produced: HCl (hydrogen chloride). Its guide number 137 has no P.
Entries near 1754
By number (yellow pages): before 1754 come UN/NA 1751 Chloroacetic acid, solid (Guide 153); UN/NA 1752 Chloroacetyl chloride (Guide 156) and UN/NA 1753 Chlorophenyltrichlorosilane (Guide 156); after it, UN/NA 1755 Chromic acid, solution (Guide 154); UN/NA 1756 Chromic fluoride, solid (Guide 154) and UN/NA 1757 Chromic fluoride, solution (Guide 154).
By name (blue pages): “Chlorosulfonic acid (with or without sulfur trioxide)” comes after Chlorosilanes, toxic, corrosive, n.o.s. (UN/NA 3361, Guide 156) and Chlorosilanes, water-reactive, flammable, corrosive, n.o.s. (UN/NA 2988, Guide 139) and before Chlorotoluenes (UN/NA 2238, Guide 129) and Chlorotoluidines, liquid (UN/NA 3429, Guide 153).
By name (blue pages): “Chlorosulphonic acid (with or without sulphur trioxide)” comes after Chlorosilanes, toxic, corrosive, n.o.s. (UN/NA 3361, Guide 156) and Chlorosilanes, water-reactive, flammable, corrosive, n.o.s. (UN/NA 2988, Guide 139) and before Chlorotoluenes (UN/NA 2238, Guide 129) and Chlorotoluidines, liquid (UN/NA 3429, Guide 153).
Guide 137 · Library
Guide 137 covers 32 UN/NA numbers. The 12 around 1754 in the guide’s number order: UN/NA 1715 Acetic anhydride; UN/NA 1725 Aluminum bromide, anhydrous; UN/NA 1726 Aluminum chloride, anhydrous; UN/NA 1736 Benzoyl chloride; UN/NA 1739 Benzyl chloroformate; UN/NA 1758 Chromium oxychloride; UN/NA 1777 Fluorosulfonic acid; UN/NA 1806 Phosphorus pentachloride; UN/NA 1807 Phosphorus pentoxide; UN/NA 1808 Phosphorus tribromide; UN/NA 1809 Phosphorus trichloride; UN/NA 9206 Methyl phosphonic dichloride.
Source: ERG 2024 (U.S. DOT PHMSA, Transport Canada, SICT Mexico), for the initial phase of a transportation incident only. Hazora is not an official ERG publication and is not affiliated with or endorsed by these or any other government agencies.