Ammonium Thiocyanate
Ammonium rhodanide, NH4SCN
- CAS
- 1762-95-4
- EC
- 217-175-6
- Sectors
- Mining & Metals, Textiles, Leather & Paper
Ammonium Thiocyanate (CAS 1762-95-4) is an inorganic ammonium salt supplied as a clear colorless to white solid, used in mining flotation to improve gold recovery and in textile printing as a dyeing assistant for acrylic and polyester fibers. It facilitates the recovery of precious metals through efficient complexation during ore processing.
In the textile sector, it serves as an essential dyeing auxiliary and printing paste component. It is valued for its ability to stabilize dye solutions and enhance color penetration.
The chemical also finds use in metal finishing as an ingredient in plating baths and corrosion inhibitors. Its high purity ensures consistent performance in industrial chemical manufacturing.
Typical Properties
| Molecular formula | CHNS.H3N |
|---|---|
| Molecular weight | 76.12 g/mol |
| Form | Solid |
| Color | clear colorless or white |
| Odor | Odorless |
| Melting point | 149.6 °C |
| Boiling point | 195 °C |
| Density | 1.3057 g/cm³ |
| Water solubility | 163 g/100 mL (20 °C) |
| Flash point | 190 °C |
| pH | 4.8-5.8 (50g/l, H2O, 20°C) |
| GHS signal word | Warning · Corrosive, Irritant / harmful, Health hazard |
| HS code | 28380000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Ammonium Thiocyanate
Applications
- Mining Flotation: Used in the concentration of metal ores to improve recovery rates of gold.
- Textile Printing: Acts as an assistant in the dyeing of acrylic and polyester synthetic fibers.
- Photography: Employed as a stabilizing and fixing agent in traditional photographic film processing.
Safety & Risks
Classified as Harmful. It is toxic to aquatic life and can release toxic gases with acids. Wear chemical gloves, safety goggles, and ensure proper ventilation.
Packaging
25kg bags with PE liners and 50kg fiber drums.