Sodium Sulphite Anhydrous

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Last update: 2017-12-25 05:25
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Sodium Sulphite Anhydrous

- Product Identification

CAS No. : 7757-83-7

EINECS No. : 231-821-4

H.S. Code : 2832.100000

Formula : Na2SO3

Molecular Weight : 126.04

Toxicity : Oral mouse LD50: 820 mg/kg

Synonyms : Sodium Sulfite Anhydrous; Disodium Sulfite; Natrii Sulphis; Natrium Sulfurosum;

Natriumsulfit (German); Sulfurous Acid, Disodium Salt;

- Physical And Chemical Properties

Physical State : White crystalline powder

Melting Point : Decomposes

Specific Gravity : 2.633

Solubility in water : good

PH : 9

Vapor Density : 4.35

NFPA Ratings : Health: 1 Flammability: 0 Reactivity: 0

Stability : Stable under ordinary conditions

- Applications

- Pharmaceutical industry for the production of chloroform, benzene, styrene sulfone, formaldehyde.

- Rubber industry as a coagulant.

- Bleached cotton printing and dyeing industry as the dechlorination agent, cotton scouring agent. It can prevent the partial oxidation of cotton cloth fiber and influence the fiber strength.

- Leather tanning industry for processing,make the leather soft, plump, tough, waterproof, bending, wear and other properties.

- The chemical industry for the production of vanillin hydroxyl, hydroxylamine hydrochloride and so on.

- Photographic Industry as a developer, etc.

- The food industry as a bleaching agent, preservatives, leavening agent, antioxidant, color agents and the insurance agent. as reducer in producing dehydration vegetables.

- Electronics industry for the manufacture of photosensitive resistance.

- Paper-making, Electronic, Water-treatment for electroplating wastewater, drinking water, etc.

- Specification

Testing Items / Quality Standard – Type (1) / Quality Standard – Type (2)

Appearance : White crystalline powder / White crystalline powder

Purity – NA2SO3 : 97% Min / 93% Min

Water Insoluble : 0.02% Max / 0.03% Max

Fe : 0.003% Max / 0.005% Max

Free Alkali, as NA2CO3 : 0.1% Max / 0.4% Max

Sulphates, as NA2SO4 : 2.5% Max / -

Chlorides, as NACL : 0.1% Max / -

- Transportation

Storage : Stored in cool and dry place, avoid moisture and heat

Packing : In 25kgs /50kgs /1000kgs net p.p. woven bags

- Other Trade Information

Min. Order Quantity : 25 MTS

Supply Capacity : 22,000Mts /Year

Loading Capacity : 27Mts/1080Bags (1x20'FCL)

Port of Loading : Huangpu / Hengyang / Tianjin, China

Fresh Stocks : Yes

Ref. Price : USD305.- ~ USD520.- /MT FOB Huangpu / Tianjin, China

Shipment Time : Within 2-3 weeks upon receipt of advance payment or L/C .

Payment Terms : T/T, L/C ( Sight / 90days ), D/P, Western Union

Origin : Hunan, Tianjin

Sample Availability : Yes

Main Export Markets : India, Indonesia, Thailand, Pakistan, Bangladesh Argentina, Turkey


 

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