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Anhydrous Sodium Sulfate
MF: Na2SO3                   
CAS NO.  7757-83-7MOLECULAR WEIGHT:126.04

Features:

white powder with shiny appearance, a sulfurous odor, exposed to the air gradually oxidized sodium carbonate. Soluble in water, alkaline solution and dissolved sulfur. Slightly soluble in alcohol, no change in dry air.

Application:
used for synthetic fiber fabric bleaching agent, stabilizer, photographic developer, dye bleaching deoxidizing agent, perfume and dye reducing agent, lignin removal agent etc.

Packing:

external polypropylene woven bag, polyethylene plastic bag lining.
Net weight: 25kg /bag 50kg /bag 1000kg/bag

Storage:
tore in a cool, dry and ventilated warehouse. Stay away from fire source of heat. Packing sealing requirements, can not contact with air. Do not transport with oxidant, acid items and hazardous substances. This product has deliquescence, not a long time storage. Transportation to prevent rain and sunlight exposure

Quality standard, Industrial Grade,National standard HG/T 2967-2000

Item

Special Grade

First Grade

Qualified Grade

Na2SO3≥ %

97.0

96.0

93.0

Fe ≤ %

0.003

0.005

0.02

Water Insolubles ≤ %

0.02

0.03

0.03

Free Alkali(Na2CO3) ≤ %

0.1

0.4

0.6

Na2SO4 ≤ %

2.5

NaCl ≤ %

0.1

Heavy Metal≤ %

0.002

As ≤ %

0.0002