Potassium Thiocyanate Ph

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potassium thiocyanate ph is the potassium salt of thiocyanic acid with molecular formula KSCN. It is a white, deliquescent and hygroscopic crystalline substance. It is easily soluble in water and alcohol. It has no odor and a cool, saline taste. Potassium thiocyanate is used in printing and dyeing textiles, freezing mixtures, manufacturing chemicals, photography and medicine. It is also used in preparing ethylenesulfide and lead thiocyanate, and for titration of iron, copper and silver ions. It is also used as a tungsten developer and refrigerant.

It reacts with Fe(III) nitrate to generate blood-red iron thiocyanate complex ion FeSCN2 +, which is the most sensitive method for testing Fe3+ ions and can eliminate the influence of all other known metal ions. It does not react with ferrous salts. It is also a useful indicator of acidity in soil.

Inhalation of large amounts can cause toxic skin eruptions, psychoses and collapse; ingested human doses may cause stomach upset, hallucinations and convulsions; experimental teratogen. Ingestion of 428 mg/kg causes goiter in newborn lambs; toxicity to the CNS, thyroid and nervous system.

It is corrosive to the eyes, skin and respiratory tract; should be handled in a well ventilated area. Incompatible with strong acids, oxidizers and nitrates; may explode on contact with aluminum; releases toxic fumes on heating. Store in a dry place. Keep container tightly sealed. It is a poison by ingestion; human ingestion has caused death. It is a moderately toxic substance by intravenous and subcutaneous routes. It is a teratogen in rats and rabbits; exposure to pregnant sheep caused abortion and congenital defects.

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