Water Treatment Agent Sodium Metabisulfite CAS 7681-57-4 Sodium Pyrosulfite

• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Certification: ISO
• Purity: ≥99%
• Type: Sodium Metabisulfite
• Model NO.: Sodium Pyrosulfite
• Appearance: White Crystalline Powder
• Application: Water Treatment, Decolorizer
• Einecs No.: 231-673-0
• Shelf Life: 24 Months
• Storage: Cool Dry Place
• Transport Package: 1kg/Bag, 25kg/Drum
• Specification: Sodium Metabisulfite
• Trademark: HNB
• Origin: China
• HS Code: 283210000
• Production Capacity: 5000kg/Month

Product Description

Product Name	Sodium Pyrosulfite
Chemical formula	Na2S2O5
Molecular weight	190.09
CAS	7681-57-4
EINECS	231-673-0
Melting point	>300 degrees
Water solubility	soluble
Density	1.48
Application	Antioxidant

Application of Sodium Pyrosulfite

1. It is used for the purification of sodium sulfonate, sulfamethazine, caprolactam, etc., as well as phenylpropansulfone and benzaldehyde.
2. Used in printing and dyeing, organic synthesis, printing, tanning, pharmacy and other sectors; used as preservative, bleaching agent and bulking agent in food processing.
3. Used as bleaching agent, mordant, reducing agent, rubber coagulant, and also used in organic synthesis pharmacy and perfume.