Difference between revisions of "Potassium cyanide"
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White, deliquescent powder with the faint odor of bitter almonds. Potassium cyanide is used to extract [[gold|gold]] and [[silver%20|silver ]]from ores. It has also been used as an [[insecticide|insecticide]] and [[fumigant|fumigant]]. Many old recipes also used potassium cyanide to clean tarnish from silver. | White, deliquescent powder with the faint odor of bitter almonds. Potassium cyanide is used to extract [[gold|gold]] and [[silver%20|silver ]]from ores. It has also been used as an [[insecticide|insecticide]] and [[fumigant|fumigant]]. Many old recipes also used potassium cyanide to clean tarnish from silver. | ||
| − | + | == Risks == | |
| − | == | + | * Extremely TOXIC by ingestion, inhalation and absorption through skin. |
| + | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC388315000&productDescription=POTASSIUM+CYANIDE%2C+PURE+500GR&vendorId=VN00032119&countryCode=US&language=en SDS] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
Soluble in water, ethanol, glycerol. | Soluble in water, ethanol, glycerol. | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 634 | + | | 634 C |
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.52 | + | | 1.52 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
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| − | + | * D. Strahan "Treatment of a Silver Dragon for the Removal of Silver Cyanide and Chalconatronite" JAIC, 25: 73-81, 1986. | |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 632 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 632 | ||
Latest revision as of 13:25, 8 September 2022
Description
White, deliquescent powder with the faint odor of bitter almonds. Potassium cyanide is used to extract Gold and silver from ores. It has also been used as an Insecticide and Fumigant. Many old recipes also used potassium cyanide to clean tarnish from silver.
Risks
- Extremely TOXIC by ingestion, inhalation and absorption through skin.
- ThermoFisher: SDS
Physical and Chemical Properties
Soluble in water, ethanol, glycerol.
| Composition | KCN |
|---|---|
| CAS | 151-50-8 |
| Melting Point | 634 C |
| Density | 1.52 g/ml |
| Molecular Weight | mol. wt. = 65.12 |
| Refractive Index | 1.410 |
Resources and Citations
- D. Strahan "Treatment of a Silver Dragon for the Removal of Silver Cyanide and Chalconatronite" JAIC, 25: 73-81, 1986.
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 632
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- George Savage, Art and Antique Restorer's Handbook, Rockliff Publishing Corp, London, 1954
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7789
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.410