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  • Region :Inorganic chemicals
  • Tel : +86-536-5590715、8217552
  • Fax : +86-536-8217352
  • Email :sales@zhaohuichem.com
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Details for China Sodium sulfite anhydrous

Sodium sulfite anhydrous 7757-83-7

Category :

Inorganic chemicals

Sodium sulfite anhydrous
CAS NO : 7757-83-7
EC NO : 231-821-4
MF : Na2SO3
MW : 126.04
Product description :

Product Name:

Sodium sulfite anhydrous

Category:

CAS NO:

7577-83-7

Molecular Formula:

Na2SO3

Specifications

Item

Grade

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.

Synonyms : Sodium sulfite anhydrous;Sodium sulphite;anhydrous sodium sulfite;Sodium sulfite ,anhydrous;
Molecular Structure : Sodium sulfite anhydrous 7757-83-7