Molecular Formula: NH4SCN
Molecular Weight: 76.12
CAS No.: 1762-95-4
H. S. Code: 2842.9010
Physical and Chemical Properties:
1) Physical State: Colorless, deliquescent crystals
2) Melting Point: 150 C
3) Specific Gravity: 1.31
4) Solubility in Water: Soluble
5) Solvent solubility: Soluble: Acetone, alcohol and ammonia
6) Flash Point: 190 C
7) PH: 4.5-6.0 (5% sol)
8) Stability: Stable under ordinary conditions. Moisture sensitive
Specification:
1) Appearance Crystalline Powder
2) Assay 99.0% min. 98%min
3) Chlorides 0.01% max. 0.01%max
4) Sulfates 0.02% max. 0.02%max
5) Heavy metal 20 ppm max. 50 ppm max
6) Fe 2 ppm max. 3 ppm max
7) PH 4.5-6.0 (5% sol) 4.5-6.0 (5% sol)
8)Water: 1.0 1.8
9) Package: 25 kg net PP bag with PE liner
Aqueous Solution:
1) Assay: 50.0%-53.0% min.
2) Chlorides: 0.03% max.
3) Sulfates: 0.02% max.
4) Heavy metal: 20 ppm max.
5) Fe: 3 ppm max.
6) PH 4.5-6.0 (5% sol)
7) Packing: 1.3MT IBC tank
Synonyms: Ammonium Rhodanide; Ammonium Rhodantate; Ammonium Rhodonide; Ammonium sulfocyanate; Ammonium Sulfocyanide; Ammonium thiocyanate; ATC; Thiocyanic acid, ammonium salt; Trans-aid;
Properties: NH4SCN, a colorless crystalline or column crystal that is soluble in water, methanol, ethanol, pyridine, acetone & ammonia and insoluble in ethyl acetate, methyl chloride and chloroform; At 140C bring thiourea. Melts at 149.6C...Thermal decomposition at 170 C may produce highly toxic fumes of hydrogen cyanide, hydrogen sulfide and toxic oxides of nitrogen, sulfur, and carbon.
Usage:
General: Mainly in pharmaceuticals, pesticide, textile, electroplating, photography, water tracer in oil fields, thinning agent, as intermediate for metal thiocyanates etc.
Textile: Printing, dyeing and finishing operations accelerator in fixing baths
Pesticide: Raw material for the production of a number of herbicides and fungicides
Photographic: Stabilizer, accelerator, etc.
Metal finishing: Plating, flotation agent.
As intermediate for metal thiocyanates (NaSCN, KSCN, CuSCN, Ca(SCN)2 ).
Storage: Store away from incompatible substances. Keep in a tightly closed bags. Store in a cool, dry, ventilated area to prevent it from being deliquescent. Separated from acids bases and oxidants.