Title: Sulfurous Acid
CAS Registry Number: 7782-99-2
Additional Names: Sulfur dioxide soln
Literature References: A soln of ~6% sulfur dioxide in water.
Properties: Colorless, clear, acid liquid; suffocating odor of sulfur dioxide. d ~1.03. Gradually oxidizes in the air to sulfuric acid. Keep in nearly full, tightly closed containers, in a cool place.
Density: d ~1.03
Use: Dental bleach.
Therap-Cat: Antiseptic.