Sodium Sulfite

ITEM	CAS NO.	UN NO./H.S CODE	PURITY	Hazard Class	Molecular Formula:	WEIGHT	QUANTITY/20' FCL
Sodium Sulfite Anhydrous	7757-83-7	283210	90/93/97%	NO	Na₂SO₃	25KG Bag	26MT

Product Name:

Sodium sulfite anhydrous

CAS NO:

7577-83-7

Molecular Formula:

Na₂SO₃

Specifications

Item	Grade
Item	Best quality	First quality	Qualifier
Sodium sulfite (Na₂SO₃) Assay, %	≥ 97.0	≥ 96.0	≥ 93.0
Fe, %	≤ 0.003	≤ 0.005	≤ 0.02
Insol. in water, %	≤ 0.02	≤ 0.03	≤ 0.05
Free alkali (Na₂SO₃) Assay, %	≤ 0.10	≤ 0.40	≤ 0.80
Sulphate (Na₂SO₄) Assay, %	≤ 2.5	—	—
Chlorides (NaCl) Assay, %	≤ 0.10	—

Packing:

25kg plastic woven bag, 50kg/500kg/1000kg flexible freight bag, or upon clients' demand.

Specifications:

white crystal or powder; pH of aqueous solution: 9-9.5, At 33.4oC,it solubility is 28%. Density: 2.633(15.4oC), refracitive index: 1.565; Molecular weight126.04.
H.S code: 283210

Use:

Used as deoxidant and bleaching agent for printing & dyeing industry; also used for paper making, electronic and water treatment industries.

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