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UN/NA 1833 · Sulfurous acid
UN/NA 1833 · ERG 2024 · Guide 154
- UN/NA
- 1833
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1833 (Sulfurous acid) under Guide 154, titled “Substances - Toxic and/or Corrosive (Non-Combustible)”.
Material name
1833 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Sulfurous acid” and “Sulphurous acid”. Both use Guide 154, so the number alone is enough to find the guide. On a numbered orange panel, 1833 is the lower number (how to read an orange panel).
ERG 2024 markings for 1833
1833 is not highlighted in green (no Table 1 entry), and its guide number 154 has no P.
Entries near 1833
By number (yellow pages): before 1833 come UN/NA 1830 Sulfuric acid (Guide 137); UN/NA 1831 Sulfuric acid, fuming (Guide 137) and UN/NA 1832 Sulfuric acid, spent (Guide 137); after it, UN/NA 1834 Sulfuryl chloride (Guide 137); UN/NA 1835 Tetramethylammonium hydroxide aqueous solution with more than 2.5% but less than 25% tetramethylammonium hydroxide (Guide 153) and UN/NA 1836 Thionyl chloride (Guide 137).
By name (blue pages): “Sulfurous acid” comes after Sulfuric acid, with more than 51% acid (UN/NA 1830, Guide 137) and Sulfuric acid, with not more than 51% acid (UN/NA 2796, Guide 157) and before Sulfuryl chloride (UN/NA 1834, Guide 137) and Sulfuryl fluoride (UN/NA 2191, Guide 123).
By name (blue pages): “Sulphurous acid” comes after Sulphuric acid, with more than 51% acid (UN/NA 1830, Guide 137) and Sulphuric acid, with not more than 51% acid (UN/NA 2796, Guide 157) and before Sulphuryl chloride (UN/NA 1834, Guide 137) and Sulphuryl fluoride (UN/NA 2191, Guide 123).
Guide 154 · Library
Guide 154 covers 127 UN/NA numbers. The 12 around 1833 in the guide’s number order: UN/NA 1812 Potassium fluoride, solid; UN/NA 1813 Caustic potash, solid; UN/NA 1814 Caustic potash, solution; UN/NA 1819 Sodium aluminate, solution; UN/NA 1823 Caustic soda, solid; UN/NA 1824 Caustic soda, solution; UN/NA 1840 Zinc chloride, solution; UN/NA 1905 Selenic acid; UN/NA 1907 Soda lime, with more than 4% sodium hydroxide; UN/NA 1908 Chlorite solution; UN/NA 2033 Potassium monoxide; UN/NA 2079 Diethylenetriamine.
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.