Hazora · Library
UN/NA 1823 · Caustic soda, solid
UN/NA 1823 · ERG 2024 · Guide 154
- UN/NA
- 1823
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1823 (Caustic soda, solid) under Guide 154, titled “Substances - Toxic and/or Corrosive (Non-Combustible)”.
Material name
1823 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Caustic soda, solid” and “Sodium hydroxide, solid”. Both use Guide 154, so the number alone is enough to find the guide. On a numbered orange panel, 1823 is the lower number (how to read an orange panel).
ERG 2024 markings for 1823
1823 is not highlighted in green (no Table 1 entry), and its guide number 154 has no P.
Entries near 1823
By number (yellow pages): before 1823 come UN/NA 1817 Pyrosulfuryl chloride (Guide 137); UN/NA 1818 Silicon tetrachloride (Guide 157) and UN/NA 1819 Sodium aluminate, solution (Guide 154); after it, UN/NA 1824 Caustic soda, solution (Guide 154); UN/NA 1825 Sodium monoxide (Guide 157) and UN/NA 1826 Nitrating acid mixture, spent, with more than 50% nitric acid (Guide 157).
By name (blue pages): “Caustic soda, solid” comes after Caustic potash, solid (UN/NA 1813, Guide 154) and Caustic potash, solution (UN/NA 1814, Guide 154) and before Caustic soda, solution (UN/NA 1824, Guide 154) and Cells, containing metallic sodium or sodium alloy (UN/NA 3292, Guide 138).
By name (blue pages): “Sodium hydroxide, solid” comes after Sodium hydrosulphide, with not less than 25% water of crystallization (UN/NA 2949, Guide 154) and Sodium hydrosulphite (UN/NA 1384, Guide 135) and before Sodium hydroxide, solution (UN/NA 1824, Guide 154) and Sodium hypochlorite (UN/NA 1791, Guide 154).
Other names starting with “Caustic”: Caustic alkali liquid, n.o.s. (UN/NA 1719, Guide 154).
Other names starting with “Sodium”: Sodium hydrogendifluoride (UN/NA 2439, Guide 154); Sodium hydrosulphide, with less than 25% water of crystallization (UN/NA 2318, Guide 135); Sodium ion batteries (UN/NA 3551, Guide 147); Sodium ion batteries contained in equipment (UN/NA 3552, Guide 147); Sodium methylate, dry (UN/NA 1431, Guide 138) and Sodium methylate, solution in alcohol (UN/NA 1289, Guide 132).
Guide 154 · Library
Guide 154 covers 127 UN/NA numbers. The 12 around 1823 in the guide’s number order: UN/NA 1805 Phosphoric acid, solution; UN/NA 1811 Potassium hydrogen difluoride, solid; 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 1824 Caustic soda, solution; UN/NA 1833 Sulfurous acid; 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.
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.