Sulfurous acid (also sulphurous acid) is the chemical compound with the formula H2SO3. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase. The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogen sulfite) and sulfite. Sulfurous acid is an intermediate species in the formation of acid rain from sulfur dioxide.Raman spectra of solutions of sulfur dioxide in water show only signals due to the SO2 molecule and the bisulfite ion, HSO−3. Wikipedia
|Emergency Response Guide No. 154|
Data from the Hazardous Materials TableSource: 49 CFR §172 (2018/07)
(3) Hazard Class8
(5) Packing Group
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
(9) Quantity Limits
(10) Vessel stowage
Segregation Chart for Load, Transport, Storage
In this table a statement is contained for each hazard class whether the loading, transport or storage with other hazard classes is allowed, is not permitted or is restricted. The table is based on U.S.-Code 49 CFR §177.848.
|May not be loaded, transported, or stored together in the same transport vehicle or storage facility.|
|Load, transport, storage together is not restricted.|
|Load, transport, storage together is allowed under restrictions.|