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Photographers' Formulary Potassium Metabisulfite - 10 Grams

Photographers' Formulary Potassium Metabisulfite - 10 Grams

B&H # PHPM10G MFR # 10-1050 10G
Photographers' Formulary Potassium Metabisulfite - 10 Grams

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Synonyms Metabisulfite of potash
Potassium pyrosulfite
pyrosulfurous acid, dipotassium salt
Disulfurous acid, dipotassium salt
Potassium disulfite
Appearance Transparent needle crystals or crystalline powder
Odor of sulfur dioxide
Uses As a preservative in developers
Used in place of sodium sulfite in some developers
Used for acidifying fixing baths
Chemical Formula K2S2O5
Notes Replaces sodium bisulfite weight for weight. Deteriorates rapidly in air.
Packaging Info
Package Weight 0.05 lb
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