Supply CAS No. 7681-57-4 Sodium Metabisulfite

• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Certification: CCIC, CIQ, RoHS, ISO
• Purity: 90%~99%
• Type: Sodium Sulfate
• Model NO.: 97%
• Appearance: Powder
• Grade Standard: Industrial Grade
• Delivery: 7 Days
• Transport Package: 25kgs Bag
• Specification: SMBS 97%
• Trademark: okay
• Origin: China
• HS Code: 28321000
• Production Capacity: 100000mt/Month

Product Description

  

Sodium metabisulfite cas 7681-57-4 Quick Details

Product Name: Sodium metabisulfite
CAS: 7681-57-4
MF: 2Na.O5S2
MW: 190.11
EINECS: 231-673-0

 

Sodium metabisulfite cas 7681-57-4 specification
ITEM	TEST RESULT
Sodium Metabisulphite (Na2S2O5) %	97.21
SO2 % ≥	65
Fe % ≤	0.002
Clarity	clear
Insoluble matter in NA ≤	0.009
AS%	<0.00009
PA test ≤	4.2
Appearance	White to slightly yellowish crystialline powder

Chemical industry
It is used for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., phenylpropane sulfone and benzaldehyde. The photographic industry is used as a fixative for the fixer. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
industry
It is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; as a preservative, bleaching agent and loosening agent in food processing.
Used as a chemical reagent
(Printing and dyeing, photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthetic pharmaceuticals and spices.