Product name:  Sulfurous acid
Alias:  schwefligesaure; sulfurdioxidesolution; sulfurous; SULPHUROUS ACID; SULFUROUS ANHYDRIDE; Sulfur dioxcide solution; sulfonic acid
CAS No.:  7782-99-2
EINECS No.:  231-973-1
Molecular formula:  H2O3S
Molecular weight:  82.0791