Photographers' Formulary 10-1360 Sodium Thiosulfate, Photo-grade for Darkroom
- Used in photographic formulas to make fixer
Photo-grade Sodium Thiosulfate, Penta 1-pound. Large, colorless/white, odorless crystals or a coarse, crystalline powder are common forms of the pentahydrate of sodium thiosulfate that are available. Sodium thiosulfate has a low toxicity. Keep container tightly closed; use adequate ventilation to prevent breathing dust; store in a cool dry place. Use the normal safe practices of darkroom and laboratory procedures.
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