| Catalogue number: | PA 27 0023111 | 
| Chemical name: | Potassium Metabisulfite | 
| CAS Number: | 16731-55-8 | 
| Category: | miscellaneous compounds | 
| Synonyms: | Potassium Disulfite; Potassium Pyrosulfite; Dipotassium Disulfite; Dipotassium Sisulphite; Disulfurous Acid, Dipotassium Salt; Pyrosulfurous Acid,Dipotassium Salt; | 
| Molecular form: | K2O5S2 | 
| Appearance: | White to Off-White Solid | 
| Mol. Weight: | 222.31 | 
| Storage: | 2-8°C Refrigerator | 
| Shipping Conditions: | Ambient | 
| Applications: | Potassium metabisulfite, K2S2O5, also known as potassium pyrosulfite, is a white crystalline powder with a pungent odour. It is mainly used as an antioxidant or chemical sterilant.[1] As a disulfite, it is chemically very similar to sodium metabisulfite, with which it is sometimes used interchangeably. | 
Potassium Metabisulfite
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