Hazora · Library
UN/NA 2308 · Nitrosylsulfuric acid, liquid
UN/NA 2308 · ERG 2024 · Guide 157
- UN/NA
- 2308
- Edition
- ERG 2024
ERG 2024 lists UN/NA 2308 (Nitrosylsulfuric acid, liquid) under Guide 157, titled “Substances - Toxic and/or Corrosive (Non-Combustible/Water-Sensitive)”.
Material name
2308 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Nitrosylsulfuric acid, liquid” and “Nitrosylsulphuric acid, liquid”. Both use Guide 157, so the number alone is enough to find the guide. On a numbered orange panel, 2308 is the lower number (how to read an orange panel).
ERG 2024 markings for 2308
2308 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Nitrosylsulfuric acid, liquid (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: NO2 (nitrogen dioxide). Its guide number 157 has no P.
Entries near 2308
By number (yellow pages): before 2308 come UN/NA 2305 Nitrobenzenesulfonic acid (Guide 153); UN/NA 2306 Nitrobenzotrifluorides, liquid (Guide 152) and UN/NA 2307 3-Nitro-4-chlorobenzotrifluoride (Guide 152); after it, UN/NA 2309 Octadiene (Guide 128P); UN/NA 2310 Pentane-2,4-dione (Guide 131) and UN/NA 2311 Phenetidines (Guide 153).
By name (blue pages): “Nitrosylsulfuric acid, liquid” comes after Nitrostarch, wetted with not less than 20% water (UN/NA 1337, Guide 113) and Nitrosyl chloride (UN/NA 1069, Guide 125) and before Nitrosylsulfuric acid, solid (UN/NA 3456, Guide 157) and Nitrosylsulphuric acid, solid (UN/NA 3456, Guide 157).
By name (blue pages): “Nitrosylsulphuric acid, liquid” comes after Nitrosyl chloride (UN/NA 1069, Guide 125) and Nitrosylsulfuric acid, solid (UN/NA 3456, Guide 157) and before Nitrosylsulphuric acid, solid (UN/NA 3456, Guide 157) and Nitrotoluenes, liquid (UN/NA 1664, Guide 152).
Guide 157 · Library
Guide 157 covers 58 UN/NA numbers. The 12 around 2308 in the guide’s number order: UN/NA 1884 Barium oxide; UN/NA 1889 Cyanogen bromide; UN/NA 1910 Calcium oxide; UN/NA 1935 Cyanide solution, n.o.s.; UN/NA 2031 Nitric acid, other than red fuming, with more than 65% nitric acid; UN/NA 2032 Nitric acid, red fuming; UN/NA 2316 Sodium cuprocyanide, solid; UN/NA 2317 Sodium cuprocyanide, solution; UN/NA 2475 Vanadium trichloride; UN/NA 2578 Phosphorus trioxide; UN/NA 2670 Cyanuric chloride; UN/NA 2682 Caesium hydroxide.
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.