96% 97% Sodium Sulphite/ Na2SO4 CAS 7757-83-7

Details:

96% 97% Sodium Sulphite/ Na2SO4 CAS 7757-83-7

 

Name: sodium sulphate anhydrous

Other name: Glauber Salt

HS code: 28331100

CAS No.: 7757-82-6

Molecular Weight: 142.04

Chemical Formula: Na2SO4

EINECS NO.: 231-820-9

PH: 9-11/Normal Grade 6-8/Viscose Grade

Properties: odorless, non-toxic.easily soluble in water; absorb moisture

Appearance: White crystalline particles

 

Details

CAS:	7757-83-7
MF:	Na2O3S
MW:	126.04
EINECS:	231-821-4
Na2SO3,%	≥97.0
Clarity test	Qualified
Cl,%	≤0.005
S2O3,%	≤0.01
Water insoluble matter,%	≤0.005
Pb,%	≤0.001
Fe,%	≤0.0005
As,%	≤0.0001
Acid sulfite	Qualified
Free alkali ( Na2CO3),%	≤0.1

 

 

Uses

The main uses are as follows:
1. Sodium sulphite (CAS NO.7757-83-7) is primarily used in the pulp and paper industry. It is used in water treatment as an oxygen scavenger agent, in the photographic industry to protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions, in the textile industry as a bleaching, desulfurizing and dechlorinating agent and in the leather trade for the sulfitization of tanning extracts.
2. Sodium sulphite is used in the purification of TNT for military use. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate.
3. Sodium sulphite is used in other applications, including ore flotation, oil recovery, food preservatives, making dyes, and detergent.
4. Sodium sulphite is also used as a preservative to prevent dried fruit from discoloring, and for preserving meats, and is used in the same way as sodium thiosulfate to convert elemental halides to their respective acids, in photography and for reducing chlorine levels in pools.
5. Sodium sulphite forms a bisulfite adduct with aldehydes, and with ketones forms a sulfonic acid. It is used to purify or isolate aldehydes and ketones.

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
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