Potassium chloride
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Description
White crystals that occur in nature as the mineral sylvite. Potassium chloride is used in photography, spectroscopy, as a table salt substitute and as an ice melting salt.
Synonyms and Related Terms
potassium monochloride; chloropotassuril; febrifuge of Sylicius; muriate of potass
Risks
- Noncombustible.
- Toxic by ingestion of large amounts.
- Millipore Sigma: SDS
Physical and Chemical Properties
Soluble in water (pH is about 7 with saturated solution). Slightly soluble in ethanol. Insoluble in ether, acetone.
| Composition | KCl |
|---|---|
| CAS | 7447-40-7 |
| Melting Point | 773 C |
| Density | 1.987 g/ml |
| Molecular Weight | mol. wt. = 74.55 |
| Boiling Point | 1500 C (sublimes) |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 631
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7783
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985