Physical features and properties of hydrogen cyanide (HCN), identification CAS number 74-90-8 and EINEICS number 200-821-6 : gas detectors HCN (hydrogen cyanide) and respiratory protection equipments hydrogen cyanide (HCN), use of a gas mask (half or full pieces) or powered air purifying respirators (PAPR) with gas cartridges and filters B
| Chemical formula | CAS number | Common synonyms |
|---|---|---|
Chemical formula HCN |
CAS number 74-90-8 |
Common synonyms
Formonitrile Hydrocyanic acid Formic anammonide Methanenitrile |
| CE number (EINECS) | Density | Conversion (1 ppm =) |
|---|---|---|
CE number (EINECS) 205-792-3 |
Density 0.94 |
Conversion (1 ppm =) 1.1 mg/m3 |
| TWA (8h) | STEL (15 mn.) | LEL | UEL | IP | GHS More | Cartridge More |
|---|---|---|---|---|---|---|
TWA (8h) 10 ppm |
STEL (15 mn.) 4.7 ppm |
LEL 5.6 % |
UEL 40 % |
IP 13.6 |
GHS More 
|
Filtre
B
|
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