Copper(I) cyanide | |
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Copper(I) cyanide
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Other names
Cuprous cyanide
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Identifiers | |
CAS number | 544-92-3 |
PubChem | 11009 |
ChemSpider | 10543 |
EC number | 208-883-6 |
RTECS number | GL7150000 |
SMILES |
[Cu+].[C-]#N
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InChI |
InChI=1/CN.Cu/c1-2;/q-1;+1
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InChI key |
DOBRDRYODQBAMW-UHFFFAOYAI
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Properties | |
Molecular formula | CuCN |
Molar mass | 89.563 g/mol |
Appearance | white to greenish powder |
Density | 2.92 g/cm3 [1] |
Melting point |
474 °C, 747 K, 885 °F |
Solubility in water | negligible |
Solubility | insoluble in ethanol, cold dilute acids; soluble in NH4OH, KCN |
Hazards | |
MSDS | Oxford MSDS |
EU Index | 006-007-00-5 |
EU classification | Very toxic (T+) Dangerous for the environment (N) |
R-phrases | R26/27/28, R32, R50/53 |
S-phrases | (S1/2), S7, S28, S29, S45, S60, S61 |
NFPA 704 | |
Flash point | Non-flammable |
(what is this?) (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
Copper(I) cyanide (CuCN), also copper cyanide, cuprous cyanide, or cupricin is a white to cream colored or sometimes greenish powdery solid that is insoluble in water. Its chemical formula is CuCN. It is a poison that reacts violently with magnesium. When heated to decomposition, it emits very toxic fumes containing hydrogen cyanide, but it is not flammable itself.
Cuprous cyanide is commercially available. It may be prepared by reducing copper(II) sulfate with sodium cyanide, giving cyanogen gas and sodium sulfate as byproducts:[2]
- 2 CuSO4 + 4 NaCN → 2 CuCN + (CN)2 + 2 Na2SO4
Cuprous cyanide was used as a catalyst in polymerizations, in electroplating of copper and iron, and as insecticide, fungicide, and biocide in marine paints.
References
- ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398
- ^ J. V. Supniewski and P. L. Salzberg (1941), "Allyl Cyanide", Org. Synth., http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=CV1P0046; Coll. Vol. 1: 46
External links
- National Pollutant Inventory - Cyanide compounds fact sheet
- National Pollutant Inventory - Copper and compounds fact sheet
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