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CAS:1762-95-4
MF:CH4N2S
EINECS:217-175-6
Purity:99%min
Other Names:Ammonium thiocyanate
What is of Ammonium thiocyanate CAS 1762-95-4?
ammonium thiocyanate: A colourless, soluble crystalline compound,NH4NCS. It is made by theaction of hydrogen cyanide on ammoniumsulphide or from ammoniaand carbon disulphide in ethanol. Onheating, it turns into its isomerthiourea, SC(NH2)2. Its solutions givea characteristic blood-red colour withiron(III) compounds and so are employedas a test for ferric iron.
Specification
|
Index Name
|
Top grade
|
First Grade
|
Qualified products
|
|
NH4SCN (dry)≥%
|
99.0
|
98.0
|
97.0
|
|
Appearance of solution
|
clear
|
||
|
PH value
|
4.5-6.0
|
||
|
Chloride,%≤
|
0.01
|
0.01
|
0.02
|
|
Sulfate,%≤
|
0.01
|
0.01
|
0.03
|
Usage
Colorless deliquescent crystals made by boiling an aqueous solution of ammonium cyanide with sulfur or polysulfides. It must be kept in a well-sealed container. The principal use for ammonium thiocyanate was in gold-toning formulas, but it was also used in a 5 percent solution to dissolve gelatin in overexposed carbon prints.
Packing
25kgs/drum, 9tons/20’container
