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Potassium Metabisulfite
K2S2O5 222.32
 Disulfurous acid, dipotassium salt;
 Dipotassium pyrosulfite [16731-55-8]

DEFINITION

Potassium Metabisulfite contains an amount of K2S2O5 equivalent to NLT 51.8% and NMT 57.6% of SO2.

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