Difference between revisions of "Potassium sulfate"
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Soluble in water (pH about 7) and glycerol. Insoluble in ethanol. | Soluble in water (pH about 7) and glycerol. Insoluble in ethanol. | ||
| − | Deliquescent point at 20C is 97.2 % RH (see [http://cameo.mfa.org/materials/fullrecord.asp?name=saturated | + | Deliquescent point at 20C is 97.2 % RH (see [http://cameo.mfa.org/materials/fullrecord.asp?name=saturated%20salt%20solutions saturated salt solutions]) |
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Mallinckrodt Baker: [http://www.jtbaker.com/msds/englishhtml/p6137.htm MSDS] | Mallinckrodt Baker: [http://www.jtbaker.com/msds/englishhtml/p6137.htm MSDS] | ||
| − | == | + | == Sources Checked for Data in Record == |
| − | * | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 33 |
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
| − | * | + | * 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 |
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7845 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7845 | ||
Revision as of 15:11, 1 May 2016
Description
Colorless crystals or white powder. Potassium sulfate is used in the manufacture of gypsum cements, fertilizers, alums, and potassium glass. In a closed environment, a saturated solution of potassium sulfate will form an equilibrium at a relative humidity of about 97% (20C).
Synonyms and Related Terms
potassium sulphate (Br.); sulfate of potash; sulfate of potass; sal polychrest;
Other Properties
Soluble in water (pH about 7) and glycerol. Insoluble in ethanol.
Deliquescent point at 20C is 97.2 % RH (see saturated salt solutions)
| Composition | K2SO4 |
|---|---|
| CAS | 7778-80-5 |
| Melting Point | 1067-1072 |
| Density | 2.66 |
| Molecular Weight | mol. wt. = 174.26 |
| Boiling Point | 1689 |
Hazards and Safety
Toxic in large amounts by ingestion.
Mallinckrodt Baker: MSDS
Sources Checked for Data in Record
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 33
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- 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
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7845