Difference between revisions of "Calcium sulfite"
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White powder. Calcium sulfite is used for bleaching paper pulp and textiles. It is also used as an antichlor, disinfectant, and food preservative. | White powder. Calcium sulfite is used for bleaching paper pulp and textiles. It is also used as an antichlor, disinfectant, and food preservative. | ||
| − | == | + | ==Physical and Chemical Properties== |
Soluble in acids with the evolution of sulfur dioxide. Slightly soluble in water, ethanol. | Soluble in acids with the evolution of sulfur dioxide. Slightly soluble in water, ethanol. | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 100 | + | | 100 C |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 132 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 132 | ||
Revision as of 13:34, 18 May 2022
Description
White powder. Calcium sulfite is used for bleaching paper pulp and textiles. It is also used as an antichlor, disinfectant, and food preservative.
Physical and Chemical Properties
Soluble in acids with the evolution of sulfur dioxide. Slightly soluble in water, ethanol.
| Composition | CaSO3-2H2O |
|---|---|
| Melting Point | 100 C |
| Molecular Weight | mol. wt. = 120.14 |
| Refractive Index | 1.590, 1.595, 1.628 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 132
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1755
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.545, 1.560, 1.605