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. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Winters, Charles D. |
Bildgröße: | 2500 px × 3750 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: |
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