Sodium cyanide
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| Sodium cyanide | |
|---|---|
| Molecular formula | NaCN |
| Molar mass | 49.01 g/mol |
| Appearance | white solid |
| CAS number | [143-33-9] |
| EINECS number | 205-599-4 |
| Properties | |
| Density and phase | 1.6 g/cm3, solid |
| Solubility in water | 48 g/100 ml (10°C) |
| Solubility in other solvents | soluble in alcohols |
| Melting point | 564°C (837 K) |
| Boiling point | 1496°C (1769 K) |
| Structure | |
| Coordination geometry | ? |
| Crystal structure | ? |
| Safety data | |
| 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 |
| PEL (US, OSHA) | 5 mg/m3 (as CN) |
| IDLH (US, NIOSH) | 25 mg/m3 (as CN) |
| RTECS number | TS8750000 |
| Supplementary data page | |
| Structure & properties | n, εr, etc. |
| Thermodynamic data | Phase behaviour Solid, liquid, gas |
| Spectral data | UV, IR, NMR, MS |
| Related compounds | |
| Other cations | Potassium cyanide |
| Related compounds | Hydrogen cyanide |
| Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references |
Sodium cyanide is a highly toxic chemical compound, also known as sodium salt of hydrocyanic acid and cyanogran. Immediate medical attention is required in the event of cyanide poisoning, as it is quickly fatal.
Sodium cyanide is used to extract gold and other precious metals from ore, and so metal mining operations consume most of the sodium cyanide production; see cyanide process for the use in gold mining. Accidents with cyanide solutions are a severe danger to aquatic ecosystems.
See also
External links
- International Chemical Safety Card 1118 (http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc11/icsc1118.htm)
- NIOSH Pocket Guide to Chemical Hazards (http://www.cdc.gov/niosh/npg/npgd0562.html)
- European Chemicals Bureau (http://ecb.jrc.it/)
- CSST (Canada) (http://www.reptox.csst.qc.ca/Produit.asp?no_produit=4275&nom=Sodium+cyanide)
- NIST Standard Reference Database (http://webbook.nist.gov/chemistry/)
- Sodium cyanide hazards to fish and other wildlife from gold (http://www.cerc.cr.usgs.gov/pubs/center/pdfDocs/90972.pdf)de:Natriumcyanid