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Alum Powder

Alum Powder

C036/3403

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Credit

CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY

Restrictions:

Editorial use only.

Caption

Alum powder. Alum may be used in pickling recipes as a preservative to maintain fruit and vegetable crispness. Alum is both a specific chemical compound and a class of chemical compounds. The specific compound is the hydrated potassium aluminium sulphate (potassium alum). More widely, alums are double sulphate salts.

Release details

Model release not required. Property release not available.

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