Ammonium Thiocyanate 99.5+% Extra Pure

What is Ammonium Thiocyanate?

Ammonium thiocyanate is the salt composed of ammonium and thiocyanate ions. It is used in various fields, the most important of which is agriculture.

Ammonium thiocyanate can be produced by reaction between carbon disulfide with ammonia. Ammonium dithiocarbamate is formed as an intermediate which decomposes on heating to ammonium thiocyanate and hydrogen sulfide.

Ammonium thiocyanate is stable in air at room temperature. However, when heated, it can isomerize to thiourea.

The mixtures at equilibrium at 150°C and 180°C contained 30.3% and 25.3% (by weight) thiourea, respectively. When heated to 200°C, the dry powder decomposes into ammonia, hydrogen sulfide and carbon disulfide, leaving a residue of guanidinium thiocyanate.

NH4SCN is weakly acidic. In water, it reacts with sodium hydroxide or potassium hydroxide to form sodium thiocyanate or potassium thiocyanate. It reacts with iron(III) salts to form a typical dark red iron(III) thiocyanate complex:

6 SCN− + Fe3+ → [Fe(SCN)6]3−

Ammonium thiocyanate reacts with various metal ions such as those of copper, silver, zinc, lead, mercury, etc. forming thiocyanate precipitates, which can be extracted with organic solvents.

What is ammonium thiocyanate used for?

Ammonium thiocyanate is mainly used in agriculture in the manufacture of herbicides, especially in combination with aminotriazole. It is also involved in the synthesis of thiocarbamide, translucent resins and the manufacture of matches. It is used as a stabilizing product in photography, as an accelerator for concrete and mortars. Some corrosion resistance tests of ferrous metals use thiocyanate as an etchant. It is used as a dyeing aid in the textile industry, as a tracer product in oil exploration. It is involved in the separation of hafnium from zirconium for the nuclear industry and in the titration of aqueous solutions.

Buy ammonium thiocyanate?

Ammonium thiocyanate from Laboratory Discounter is of high quality and is also offered for a friendly price. Always a discount when purchasing multiple packages. Always in stock and delivered quickly.

Technical data:

Empirical formula NH4SCN
Molar mass (M) 76.12 g/mol
Density 1.305
Melting point (mp)150 °C
Solubility: 1650 g/l (H2O, 19 °C)
WCK 1
CAS No.[1762-95-4]
EC-No. 217-175-6

Downloads