Chemical
Sodium thiocyanate
CAS 540-72-7 · EC 208-754-4 · CNNaS
Covered by harmonised group entries rather than a substance-specific one. The alkali-salts entry (615-030-00-5) has the classes shown; the generic salts entry (615-004-00-3) adds EUH032, which is kept here because contact with acids liberates very toxic gas.
- Signal word
- Warning
- CAS
- 540-72-7
- EC number
- 208-754-4
- UK/EU status
- No UK or EU restrictions recorded
Handle chemistry safely
Wear gloves and eye protection, work with good ventilation, and read the supplier’s safety data sheet before use. Hazard information here is a summary, not a replacement for it. Dispose of all photographic chemistry correctly, in line with local laws and your local authority’s guidance. Never mix waste solutions, and check the supplier’s safety data sheet before disposing of anything.
Hazards
Official EU classification (CLP Annex VI).
Harmonised classes: Acute Tox. 4 (Inhalation)* (H332); Acute Tox. 4 (Dermal)* (H312); Acute Tox. 4 (Oral)* (H302); Aquatic Chronic 3 (H412).
Signal word: Warning
Harmful or irritant
| Code | Hazard statement |
|---|---|
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H412 | Harmful to aquatic life with long lasting effects. |
| EUH032 | Contact with acids liberates very toxic gas. |
Photographic uses
- GP-1 gold toner