Thiourea
CAS 62-56-6 · EC 200-543-5 · CH4N2S
Also known as thiocarbamide
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 (harmonised under CLP Annex VI).
Signal word: Warning
Serious health hazard · Harmful or irritant · Hazardous to the environment
- H351 Suspected of causing cancer.
- H361d Suspected of damaging the unborn child.
- H302 Harmful if swallowed.
- H411 Toxic to aquatic life with long lasting effects.
Photographic uses
- variable sepia toners (thiocarbamide toners)