Hydrogen cyanide
formonitrile, hydrocyanic acid, prussic acid
How to detect Hydrogen cyanide
Formula: HCN | CAS: 74-90-8
Synonyms: formonitrile, hydrocyanic acid, prussic acid
Specification
| Specification | Value/Information |
|---|---|
| Formula | HCN |
| CAS no. | 74-90-8 |
| Gas Response Factor, 11.7 eV | ZR |
| Gas Response Factor, 10.6 eV | ZR |
| Gas Response Factor, 10.0 eV | ZR |
| ppm per mg/m⁻³, (20 °C, 1 bar) | 0.89 |
| Molecular Weight, g/mole | 27.0 |
| Melting point, °C | '-13 |
| Boiling point, °C | 26 |
| Flash point, °C | '-17.8 |
| Upper Explosive Limit, % | 40 |
| Specification | Value/Information |
|---|---|
| Lower Explosive Limit, % | 5.6 |
| Density, g.cm⁻³ | 0.69 |
| Ionisation Energy, eV | 13.6 |
| EH40 STEL, ppm | 10 |
| EH40 STEL, mg.m⁻³ | 11 |
| NIOSH ST, ppm | 4.7 |
| NIOSH ST, mg.m⁻³ | 5 |
| NIOSH IDLH, ppm | 50 |
| OSHA TWA PEL, ppm | 10 |
| OSHA TWA PEL, mg.m⁻³ | 11 |
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