Cyanogen chloride
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| Names | |||
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| Preferred IUPAC name
Carbononitridic chloride | |||
| Systematic IUPAC name
Chloroformonitrile | |||
Other names
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| Identifiers | |||
3D model (JSmol) |
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| Abbreviations | CK | ||
| ChemSpider | |||
| ECHA InfoCard | 100.007.321 | ||
| EC Number |
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| MeSH | cyanogen+chloride | ||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 1589 | ||
CompTox Dashboard (EPA) |
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| Properties | |||
| ClCN | |||
| Molar mass | 61.470 g/mol | ||
| Appearance | Colorless gas | ||
| Odor | acrid | ||
| Density | 2.7683 mg/cm3 (at 0 °C, 101.325 kPa) | ||
| Melting point | −6.55 °C (20.21 °F; 266.60 K) | ||
| Boiling point | 13 °C (55 °F; 286 K) | ||
| soluble | |||
| Solubility | soluble in ethanol, ether | ||
| Vapor pressure | 1.987 MPa (at 21.1 °C) | ||
| −32.4·10−6 cm3/mol | |||
| Thermochemistry | |||
Std molar entropy (S⦵298) |
236.33 J/(mol·K) | ||
Std enthalpy of formation (ΔfH⦵298) |
137.95 kJ/mol | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards |
Highly toxic; forms cyanide in the body | ||
| GHS labelling: | |||
| Danger | |||
| NFPA 704 (fire diamond) | |||
| Flash point | nonflammable | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none | ||
REL (Recommended) |
C 0.3 ppm (0.6 mg/m3) | ||
IDLH (Immediate danger) |
N.D. | ||
| Safety data sheet (SDS) | inchem.org | ||
| Related compounds | |||
Related alkanenitriles |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
Cyanogen chloride is an inorganic compound with the formula ClCN. This triatomic pseudohalogen is an easily condensed colorless gas. More commonly encountered in the laboratory is the related compound cyanogen bromide, a room-temperature solid that is used in biochemical analysis and preparation. Cyanogen compounds are highly toxic.