Ammonium Thiocyanate - Materials / Alfa Chemistry

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Ammonium Thiocyanate

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Catalog Number

ACMA00017304

Product Name

Ammonium Thiocyanate

Category

Polymers

Description

Ammonium thiocyanate is a colorless crystalline solid. It is soluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. It is used in chemical analysis, in photography, as a fertilizer, and for many other uses.;DryPowder; OtherSolid; PelletsLargeCrystals

IUPAC Name

azanium;thiocyanate

Molecular Weight

76.12g/mol

Molecular Formula

NH4SCN;CH4N2S

Canonical SMILES

C(#N)[S-].[NH4+]

InChI

InChI=1S/CHNS.H3N/c2-1-3;/h3H;1H3

InChI Key

SOIFLUNRINLCBN-UHFFFAOYSA-N

Boiling Point

Solid decomposes (USCG, 1999)

Melting Point

320 °F (USCG, 1999);149.6 °C;149.6 °C

Density

greater than 1.1 at 68 °F 1.1-1.15 at 20°C (solution) (USCG, 1999);1.3057 g/mL

Solubility

8.28 M;Very sol in water and ethanol; sol in acetone; insol in chloroform.;Highly sol in liquid ammonia and liquid sulfur dioxide, and mildly sol in acetonitrile;Freely sol in ethanol; sol in methanol, acetone; practically insol in CHCl3, ethyl acetate

Application

Ammonium thiocyanate serves several purposes across different industries due to its versatile properties. This colorless, moisture-absorbing solid is utilized in the manufacture of matches, enhancing the double-dyeing process for fabrics and contributing to strength improvements in silk fibers treated with tin salts. It plays a vital role in photography, acting as a rapid fixative, and is employed in creating a grayish-black coating on zinc and in producing artificial resins and thiourea. Additionally, ammonium thiocyanate is a valuable component in pesticides and explosives. In chemical analysis, it is instrumental in detecting and determining trace amounts of iron, silver, and mercury, with its solutions producing a distinctive blood-red color in the presence of iron(III) compounds. Despite its useful applications, it must be handled with care due to its moderate health and reactivity ratings.

Color/Form

Deliquescent crystals;Colorless, hygroscopic crystals

Complexity

31.3

Corrosivity

Highly corrosive to iron, copper, and brass.

Covalently-Bonded Unit Count

EC Number

217-175-6

Exact Mass

76.009519g/mol

Formal Charge

Heavy Atom Count

MeSH Entry Terms

ammonium rhodanate;ammonium thiocyanate;ammonium thiocyanate, (15)N-labeled cpd;thiocyanic acid;thiocyanic acid, ammonium salt;thiocyanic acid, barium salt;thiocyanic acid, magnesium salt

Monoisotopic Mass

76.009519g/mol

Odor

Odorless

Other Experimental

Decomposes at 170 °C;Heat of Soln: 133 Btu/lb= 74 cal/g= 3.1X10+5 J/kg

Rotatable Bond Count

UNII

YYL9152Z1Y

UN Number

3077;3077

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