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| Cas Number | 74-90-8 |
| Chemical Name | hydrogen cyanide ...% |
| Chemical Synonym |
hydrocyanic acid ...% |
| Hazard Category |
Hazardous to the aquatic environment (acute) – category 1 Hazardous to the aquatic environment (chronic) – category 1 Acute toxicity (dermal) - category 1 Acute toxicity (inhalation) - category 2 Acute toxicity (ingestion) - category 2 |
| Hazard Statement |
H410 (Very toxic to aquatic life with long-lasting effects) H310 (Fatal in contact with skin) H330 (Fatal if inhaled) H300 (Fatal if swallowed) |
| Pictogram |
GHS06 (Skull and Crossbones) 
GHS09 (Environment) |
| Signal Word | Danger |
| Cut-offs | |
| Notes |
B (Some substances (acids, bases, etc.) are placed on the market in aqueous solutions at various concentrations and, therefore, these solutions require different classification and labelling since the hazards vary at different concentrations.Entries with Note B have a general designation of the following type: ‘nitric acid … %’.In this case the supplier should state the percentage concentration of the solution on the label. Unless otherwise stated, it is assumed that the percentage concentration is calculated on a weight/weight basis.) |
| Sources |
EU (Classification information for chemical is taken from the European Union’s Classification, Labelling and Packaging (CLP) Regulation.) |
Hazardous Chemical History
| Date | Description |
|---|---|
| 22/10/2019 |
Hazard Category modified from [HC060:Acute toxicity – category 2, HC059:Acute toxicity – category 1, HC060:Acute toxicity – category 2, HC115:Hazardous to the aquatic environment (acute) – category 1, HC118:Hazardous to the aquatic environment (chronic) – category 1] to [HC115:Hazardous to the aquatic environment (acute) – category 1, HC118:Hazardous to the aquatic environment (chronic) – category 1, HC074:Acute toxicity (dermal) - category 1, HC065:Acute toxicity (inhalation) - category 2, HC070:Acute toxicity (ingestion) - category 2] Hazard Statement modified from [H330 Fatal if inhaled; H310 Fatal in contact with skin; H300 Fatal if swallowed; H410 Very toxic to aquatic life with long-lasting effects] to [H410 Very toxic to aquatic life with long-lasting effects; H310 Fatal in contact with skin; H330 Fatal if inhaled; H300 Fatal if swallowed] |
| 23/06/2016 | Chemical Added |