• WordNet 3.6
    • n thiocyanate a salt of thiocyanic acid; formed when alkaline cyanides are fused with sulfur
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Webster's Revised Unabridged Dictionary
    • n Thiocyanate (Chem) Same as Sulphocyanate.
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Century Dictionary and Cyclopedia
    • n thiocyanate In chem., a salt analagous in composition to a cyanate, but containing sulphur in place of oxygen, as potassium thiocyanate, KCNS, which is produced by the direct union of sulphur with potassium cyanide. Ammonium thiocyanate occurs in coal-gas liquor. Ferric thiocyanate forms a deep blood-red solution, resorted to as a test in analytical chemistry. Mercuric thiocyanate is the material for making the toy “Pharaoh' s serpents.” Formerly called sulphocyanale or sulphocyanide or rhodanide.
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In literature:

Titrate the excess silver with N/10 ammonium or potassium thiocyanate until a permanent light brown color appears.
"All About Coffee" by William H. Ukers
The double thiocyanate, Cr(SCN)3.3KCNS.4H2O, is also known.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3" by Various
C.; but best by heating ammonium thiocyanate to 180 deg.-190 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6" by Various