Hazora · Library
UN/NA 3456 · Nitrosylsulfuric acid, solid
UN/NA 3456 · ERG 2024 · Guide 157
- UN/NA
- 3456
- Edition
- ERG 2024
ERG 2024 lists UN/NA 3456 (Nitrosylsulfuric acid, solid) under Guide 157, titled “Substances - Toxic and/or Corrosive (Non-Combustible/Water-Sensitive)”.
Material name
3456 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Nitrosylsulfuric acid, solid” and “Nitrosylsulphuric acid, solid”. Both use Guide 157, so the number alone is enough to find the guide. On a numbered orange panel, 3456 is the lower number (how to read an orange panel).
ERG 2024 markings for 3456
3456 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Nitrosylsulfuric acid, solid (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 3456
By number (yellow pages): before 3456 come UN/NA 3453 Phosphoric acid, solid (Guide 154); UN/NA 3454 Dinitrotoluenes, solid (Guide 152) and UN/NA 3455 Cresols, solid (Guide 153); after it, UN/NA 3457 Chloronitrotoluenes, solid (Guide 152); UN/NA 3458 Nitroanisoles, solid (Guide 152) and UN/NA 3459 Nitrobromobenzenes, solid (Guide 152).
By name (blue pages): “Nitrosylsulfuric acid, solid” comes after Nitrosyl chloride (UN/NA 1069, Guide 125) and Nitrosylsulfuric acid, liquid (UN/NA 2308, Guide 157) and before Nitrosylsulphuric acid, liquid (UN/NA 2308, Guide 157) and Nitrotoluenes, liquid (UN/NA 1664, Guide 152).
By name (blue pages): “Nitrosylsulphuric acid, solid” comes after Nitrosylsulfuric acid, liquid (UN/NA 2308, Guide 157) and Nitrosylsulphuric acid, liquid (UN/NA 2308, Guide 157) and before Nitrotoluenes, liquid (UN/NA 1664, Guide 152) and Nitrotoluenes, solid (UN/NA 3446, Guide 152).
Guide 157 · Library
Guide 157 covers 58 UN/NA numbers. The 12 around 3456 in the guide’s number order: UN/NA 1549 Antimony compound, inorganic, solid, n.o.s.; UN/NA 1560 Arsenic chloride; UN/NA 1565 Barium cyanide; UN/NA 1575 Calcium cyanide; UN/NA 1588 Cyanides, inorganic, solid, n.o.s.; UN/NA 3141 Antimony compound, inorganic, liquid, n.o.s.; UN/NA 3320 Sodium borohydride and sodium hydroxide solution, with not more than 12% sodium borohydride and not more than 40% sodium hydroxide; UN/NA 3413 Potassium cyanide, solution; UN/NA 3414 Sodium cyanide, solution; UN/NA 3419 Boron trifluoride acetic acid complex, solid; UN/NA 3420 Boron trifluoride propionic acid complex, solid; UN/NA 3498 Iodine monochloride, liquid.
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.