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1762-95-4 - Ammonium thiocyanate, 98+% - Ammonium rhodanide - A10632 - Alfa Aesar

A10632 Ammonium thiocyanate, 98+%

CAS-Nummer
1762-95-4
Synonyme
Ammonium rhodanide

Größe Preis ($) Menge Verfügbarkeit
250g 41,41
1000g 118,45
5000g 404,79
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Ammonium thiocyanate, 98+%

MDL
MFCD00011428
EINECS
217-175-6

Chemische Eigenschaften

Formel
CH4N2S
Molmasse
76.12
Schmelzpunkt
147-149°
Dichte
1.305
Sensitivität
Light Sensitive & Hygroscopic
Löslichkeit
Soluble in water, ethanol, methanol, ammonia and acetone. Insoluble in chloroform and ethyl acetate.

Anwendungen

Ammonium thiocyanate has many uses in manufacturing chemicals such as metal thiocyanates [CuSCN, Ca(SCN)<sub>2</sub>, NaSCN, KSCN] and in a number of pharmaceuticals. It is used in freezing solutions, pickling, printing, and as a corrosion inhibitor against acid gases. It is used in the photography industry as a stabilizer or an accelerator. It is also used in fertilizers, fabric dyeing, zinc coating, electroplating and as a separator of zirconium and hafnium as well as gold and iron. It is also used in analytical chemistry for titrimetric analysis and to determine the iron content by colorimetry in soft drinks.

Bemerkungen

Light sensitive and hygroscopic. Incompatible with strong oxidizing agents, strong acids and lead nitrate.

Literaturverweise

Thiocyanogen bromide can be generated in situ by reaction with bromine in acetic acid, e.g. in the thiocyanation of N,N-dimethylaniline to 4-N,N-dimethylaminophenylisothiocyanate: Org. Synth. Coll., 2, 574 (1943).

Also useful for the conversion of arylamines to thioureas either indirectly via benzoyl isothiocyanate: Org. Synth. Coll., 3, 735 (1955), or directly, but in lower yield, by reaction of ammonium thiocyanate with the amine in the presence of HCl: Org. Synth. Coll., 4, 180 (1963).

In combination with CAN in t-butanol, epoxides are converted to thiiranes in high yield: Synthesis, 821 (1996). The same conversion can also be effected in the presence of SbCl3 in acetonitrile: Indian J. Chem., 38B, 605 (1999). CAN also promotes the direct conversion of activated aryl systems, e.g. indoles, pyrroles and N,N-dialkylanilines to aryl thiocyanates: Tetrahedron Lett., 40, 1195 (1999).

Yang, X.; Fu, Y.; Zhang, X.; Dong, H.; Wang, Y.; Yue, G.; Liu, J. Chiral supramolecular nanoparticles: Liquid-Liquid Equilibria of Benzene + Cyclohexane + N,N-Dimethyl Acetamide + Ammonium Thiocyanate at 298.15 K and Atmospheric Pressure. J. Chem. Eng. Data 2015, 60 (4), 971-975.

Ichiba, M.; Sakai, J.; Doshida, T.; Takai, K. Corrosion reaction and hydrogen absorption of steel for prestressed concrete in a 20 mass% ammonium thiocyanate solution. Scripta Materialia 2015, 102, 59-62.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H302-H312-H332-H402-H412

Harmful if swallowed. Harmful in contact with skin. Harmful if inhaled. Harmful to aquatic life. Harmful to aquatic life with long lasting effects.

Sicherheitshinweise: P261-P273-P280-P264-P304+P340-P301+P312-P312-P363-P322-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Wash contaminated clothing before reuse. Specific measures (see label). Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,561
Beilstein
3595135
Harmonized Tariff Code
2842.90
TSCA
Yes
RTECS
XK7875000

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