Ammonium Thiocyanate is an inorganic compound with the chemical formula NH₄SCN. It is an ammonium salt of thiocyanic acid composed of ammonium (NH₄⁺) cations and thiocyanate (SCN⁻) anions. It is a colorless, crystalline, and deliquescent solid that is readily soluble in water, ethanol, methanol, and acetone, while being almost insoluble in chloroform and ethyl acetate. Its aqueous solution develops a characteristic blood-red color in the presence of ferric ions but shows no visible reaction with ferrous ions. Its unique chemical and complex-forming properties make it an important reagent in analytical chemistry and a valuable intermediate in chemical manufacturing.
CAS No.: 1762-95-4
Synonyms: Ammonium isothiocyanate, Trans-aid.
| Physical Properties | |
| Chemical formula | CH₄N₂S |
| IUPAC Name | azanium thiocyanate |
| Molecular weight | 76.12 g/mol |
| Solubility | Soluble in water |
| Appearance | Colorless or white crystals |
| Ph | 4.8 |
| Density | 1.15 |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State (20 °C) | Solid |
| Melting Point | 150 °C |
| Vapor Pressure | 0.000114 hPa ( 20 °C) |
| Odor | Odorless |
| Pictograms : |  |
| Hazard Statements : | H302+H312+H332: Harmful if swallowed, in contact with skin or if inhaled H318: Causes serious eye damage H412: Harmful to aquatic life with long-lasting effects |
| Precautionary statements : | P261: Avoid breathing dust P273: Avoid release to the environment P280: Wear protective gloves/protective clothing/eye protection/face protection |
Ammonium Thiocyanate is an inorganic compound with the chemical formula NH₄SCN. It is an ammonium salt of thiocyanic acid composed of ammonium (NH₄⁺) cations and thiocyanate (SCN⁻) anions. It is a colorless, crystalline, and deliquescent solid that is readily soluble in water, ethanol, methanol, and acetone, while being almost insoluble in chloroform and ethyl acetate. Its aqueous solution develops a characteristic blood-red color in the presence of ferric ions but shows no visible reaction with ferrous ions. Its unique chemical and complex-forming properties make it an important reagent in analytical chemistry and a valuable intermediate in chemical manufacturing.
CAS No.: 1762-95-4
Synonyms: Ammonium isothiocyanate, Trans-aid.
| Physical Properties | |
| Chemical formula | CH₄N₂S |
| IUPAC Name | azanium thiocyanate |
| Molecular weight | 76.12 g/mol |
| Solubility | Soluble in water |
| Appearance | Colorless or white crystals |
| Ph | 4.8 |
| Density | 1.15 |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State (20 °C) | Solid |
| Melting Point | 150 °C |
| Vapor Pressure | 0.000114 hPa ( 20 °C) |
| Odor | Odorless |
| Pictograms : | |
| Hazard Statements : | H302+H312+H332: Harmful if swallowed, in contact with skin or if inhaled H318: Causes serious eye damage H412: Harmful to aquatic life with long-lasting effects |
| Precautionary statements : | P261: Avoid breathing dust P273: Avoid release to the environment P280: Wear protective gloves/protective clothing/eye protection/face protection |
Ammonium thiocyanate is widely used in analytical chemistry, textile dyeing and printing, electroplating, pharmaceutical manufacturing, and the production of thiourea, herbicides, and specialty chemicals. It is also used as a tracer in oil fields and in the separation of hafnium from zirconium.
Ammonium thiocyanate is also known by its chemical formula NH₄SCN. It is the ammonium salt of thiocyanic acid.
Ammonium thiocyanate is highly soluble in water and also dissolves in ethanol, methanol, and acetone, while it is nearly insoluble in chloroform and ethyl acetate.
Ammonium thiocyanate is widely used as an analytical reagent for the determination of iron, silver, mercury, and trace metals using titrimetric and colorimetric methods.
