Potassium Metabisulfite
[CAS# 4429-42-9]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Metal sulfides and sulfates
• Name: Potassium Metabisulfite
• Synonyms: Ccris 1427; Dipotassium Disulfite; Dipotassium Disulphite
• Molecular Formula: K₂O₅S₂
• Molecular Weight: 222.31
• CAS Registry Number: 4429-42-9
• SMILES: [S]([S](=O)(=O)[O-])(=O)[O-].[K+].[K+]
• InChI: 1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
• InChIKey: RWPGFSMJFRPDDP-UHFFFAOYSA-L

Properties

• Melting point: 190°C (Expl.)

Safety Data

• Safety Code: S26;S37
• Risk Code: R31;R36/37/38
• Hazard Symbol: X
• Safety Description: WARNING: Irritates lungs, eyes, skin