Industrial Grade Sodium Sulfite

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CAS NO.： 7757-83-7

FOB Price： NEGOTIABLE Get Latest Price

Specification： ≥97.0%; ≥96.0%; ≥93.0%

Documentation： Get COA after inquiry

Lead Time： 14-30 days

Max Capacity： 50000MT/Year

Packing： 25KG/Woven Bag; 50KG/Woven Bag; 25KG/Paper Bag; Customed Package

Product Detail

Properties

Industrial Grade Sodium Sulfite

Item	Quality standard
	HG/T 2967-2000
	Top-grade	First grade	Qualified product
sodium sulfite (Na₂SO₃),%	≥97.0	≥96.0	≥93.0
Fe,%	≤0.003	≤0.005	≤0.02
Water-Insoluble	≤0.02	≤0.03	≤0.05
Free alkali(As content Na₂CO₃),%	≤0.10	≤0.40	≤0.80
Sulfate(As content Na₂SO₄),%	≤2.5	-	-
Chloride(NaCl), content %	≤0.10	-	-

Packing:polypropylene weaving bag lined with polyethylene plastic bag, paper plastic compound bag, etc.

Net wt.:25/50/1000kg/bag or upon clients' request

Properties

Sodium sulfite is an inorganic compound. It is a white granular powder at room temperature, soluble in water and reducing. It is disproportioned into sodium sulfide and sodium sulfate when heated and gradually oxidized into sodium sulfate when placed in air. It can exist in three forms: anhydrous matter, heptahydrate and decahydrate, of which anhydrous matter is the most difficult to be oxidized. Its aqueous solution is alkaline due to hydrolysis and releases toxic sulfur dioxide gas during acidification. Sodium sulfite can be prepared by introducing sulfur dioxide into sodium hydroxide solution. When sulfur dioxide is excessive, sodium bisulfite will be generated. Sodium sulfite can be used as developer, preservative of dried fruit and meat, Deoxidizer in printing and dyeing industry, and reducing chemical reagent. It is used in chemical industry and laboratory production and synthesis.

CAS No.

7757-83-7

Formula

Na2O3S

Molecular Mass

126.04300

Exact Mass

125.93600

PSA

82.40000

Logp

-0.13840