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UN/NA 1818 · Silicon tetrachloride
UN/NA 1818 · ERG 2024 · Guide 157
- UN/NA
- 1818
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1818 (Silicon tetrachloride) under Guide 157, titled “Substances - Toxic and/or Corrosive (Non-Combustible/Water-Sensitive)”.
Material name
1818 on a placard, orange panel or shipping paper
It points to the ERG 2024 entry “Silicon tetrachloride” and to Guide 157. On a numbered orange panel, 1818 is the lower number (how to read an orange panel).
ERG 2024 markings for 1818
1818 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Silicon tetrachloride (when spilled in water)”. Hazora shows those distances in the app, not on this page. “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 157 has no P.
Entries near 1818
By number (yellow pages): before 1818 come UN/NA 1815 Propionyl chloride (Guide 155); UN/NA 1816 Propyltrichlorosilane (Guide 155) and UN/NA 1817 Pyrosulfuryl chloride (Guide 137); after it, UN/NA 1819 Sodium aluminate, solution (Guide 154); UN/NA 1823 Caustic soda, solid (Guide 154) and UN/NA 1824 Caustic soda, solution (Guide 154).
By name (blue pages): “Silicon tetrachloride” comes after Silane (UN/NA 2203, Guide 116) and Silicon powder, amorphous (UN/NA 1346, Guide 170) and before Silicon tetrafluoride (UN/NA 1859, Guide 125) and Silicon tetrafluoride, adsorbed (UN/NA 3521, Guide 173).
Guide 157 · Library
Guide 157 covers 58 UN/NA numbers. The 12 around 1818 in the guide’s number order: UN/NA 1789 Hydrochloric acid; UN/NA 1790 Hydrofluoric acid; UN/NA 1792 Iodine monochloride, solid; UN/NA 1796 Nitrating acid mixture with more than 50% nitric acid; UN/NA 1798 Aqua regia; UN/NA 1802 Perchloric acid, with not more than 50% acid; UN/NA 1825 Sodium monoxide; UN/NA 1826 Nitrating acid mixture, spent, with more than 50% nitric acid; UN/NA 1837 Thiophosphoryl chloride; UN/NA 1884 Barium oxide; UN/NA 1889 Cyanogen bromide; UN/NA 1910 Calcium oxide.
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.