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Selenious Acid
Annie Chemie Pvt. Ltd, is a pioneer manufacturer and exporter of Specialty chemicals, oil field shale gas fracking or hydraulic fracturing chemicals, Located at Dahej in Gujarat, India. Annie Chemie Pvt. Ltd, has manufacturing facilities and associates spread across USA, Canada, Russia, Europe, UAE, Nigeria, Algeria, Turkey, Mexico, Brazil, Chile, Argentina, Australia, Dubai etc.
Selenious Acid USP Grade
H2SeO3 -- 128.97
Selenium dioxide, monohydrated.
Selenious acid CAS 7783-00-8
Selenious Acid contains not less than 93.0 percent and not more than 101.0 percent of H2SeO3.
Identification:
A: Dissolve about 50 mg in 5 mL of water, add about 100 mg of sodium bicarbonate, and mix: gas bubbles develop.
B: Dissolve about 50 mg in 5 mL of 0.1 N hydrochloric acid, and add about 50 mg of stannous chloride: a curdy tan-orange precipitate is formed.
Residue on ignition: not more than 1.0 mg, from 10.0 g (0.01%).
Insoluble matter: Dissolve 1 g in 5 mL of water: it dissolves completely and the solution is clear.
Selenate and sulfate: Dissolve about 0.5 g in 10 mL of water, add 0.1 mL of hydrochloric acid and 1 mL of barium chloride, and mix: no turbidity or precipitate is formed in 10 minutes.