Hydrogen Cyanide
CAS Number
74-90-8Synonym
AC; AI3-31100-X; Aero Liquid HCN; Caswell No. 483; Cyclon; Evercyn; Formic anammonide; Formonitrile; HCN; Hydrocyanic acid; Prussic acid; Zaclondiscoids; EPA Pesticide Code: 045801
Occurrence/Use
Precursor to sodium cyanide and potassium cyanide; chemical warfare agent, fumigant, electroplating; organic chemical synthesis; production of nylon, synthetic fibers, dyes, pesticides; component of vehicle exhaust, wood and tobacco smoke. Naturally occurring in fruits with pit.
Acute RELs
| Acute REL (μg/m3): | 340 |
|---|---|
| Species: | Monkey |
| Acute REL Toxicologic Endpoint: | Loss of coordination and consciousness due to cellular hypoxia |
| Acute REL Target Organs: | Central nervous system |
| Severity: | Severe |
| Last Acute REL Revision: | 1999 |
| Acute Reference Exposure Levels Comments: |
OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D2. Listed as Hydrogen cyanide. |
Chronic REL
| Chronic Inhalation REL (μg/m3): | 9 |
|---|---|
| Chronic Target Organs: | Nervous system, endocrine system, cardiovascular system |
| Human Data: | Yes |
| Last Chronic REL Revision: | 2000 |
| Chronic Reference Exposure Levels Comments: |
OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D3. Listed as Hydrogen cyanide. |