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.   |