Potassium Persulfate
Title: Potassium Persulfate
CAS Registry Number: 7727-21-1
Molecular Formula: K2O8S2
Molecular Weight: 270.32
Percent Composition: K 28.93%, O 47.35%, S 23.72%
Line Formula: K2S2O8
Literature References: The article of commerce contains 93-97% K2S2O8.
Properties: Colorless or white, odorless crystals. Gradually dec, losing available oxygen; dec more quickly at higher temps; completely dec ~100°. A powerful oxidizing agent. Sol in ~50 parts water, 25 parts water at 40°; insol in alc; the aq soln dec at ordinary temp and more rapidly on warming. The aq soln is acid. Keep well closed, in a cool place.
Use: Bleaching fabrics, soaps; in photography under the name Anthion to remove last traces of thiosulfate from plates and paper; in analytical chemistry.

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