Calcium bisulfite
Description
A yellow liquid with a strong Sulfur dioxide odor. Calcium bisulfite is only known in solution. It is prepared by saturating Calcium carbonate with Sulfurous acid or by bubbling sulfur dioxide through a Calcium hydroxide solution. Calcium hydrogen sulfite is used in the manufacturing of paper pulp to dissolve Lignin and as a Scavenger for chlorine. It is also used as a bleach, Preservative, and Disinfectant.
Synonyms and Related Terms
calcium hydrogen sulfite; calcium dihydrogen sulfite; calcium acid sulfite; lime bisulfite
Other Properties
Corrosive to metals.
| Composition | Ca(HSO3)2 |
|---|---|
| Density | 1.06 |
Hazards and Safety
Contact can be irritating and corrosive.
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1690