Ferric ammonium citrate (green or brown)
CAS 1185-57-5 · EC 214-686-6 · C6H9FeNO7
Also known as ammonium iron(III) citrate, FAC
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
There is no official EU classification. Shown is the classification most companies have notified to ECHA: 82.77% of notifications, 3 distinct classifications notified.
Signal word: Warning
Harmful or irritant
- H315 Causes skin irritation.
- H319 Causes serious eye irritation.
Photographic uses
- cyanotype sensitiser (classic)
- Van Dyke brown sensitiser
Used in: Van Dyke (Vandyke) brown