Chemical
Gold(III) chloride
CAS 13453-07-1 · EC 236-623-1 · AuCl3
Also known as gold trichloride, auric chloride
Toners usually use chloroauric acid (hydrogen tetrachloroaurate, CAS 16903-35-8) rather than anhydrous gold chloride. Supplier safety data sheets for that form commonly classify it as corrosive and a skin sensitiser, so follow your supplier's SDS.
- Signal word
- Warning
- CAS
- 13453-07-1
- EC number
- 236-623-1
- 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
No official EU classification or REACH registration. Shown is the classification most often notified to ECHA.
Notified classes: STOT SE 3 (H335); Skin Irrit. 2 (H315); Eye Irrit. 2 (H319).
Signal word: Warning
Harmful or irritant
| Code | Hazard statement |
|---|---|
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
Photographic uses
- gold toners (salt, albumen, argyrotype, Van Dyke)
- chrysotype
- GP-1 gold toner