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Sodium Sulphite Anhydrous

  Post Date: Nov 25,2021
  Expiry Date: Nov 25,2022
  Detailed Description: Cas No. :7757-83-7
Quantity: 22,000Metric Tons
Specs:97% Min / 93% Min
Price:520 USD Metric Tons
Payment Method: T/T, L/C, D/P, Western Union

 

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 (1×20’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, Iran, Argentina, Turkey

 

  CAS Registry Number:

7757-83-7

  Synonyms: ;Sodium sulfite anhydrous;Sodium sulphite;anhydrous sodium sulfite;Sodium sulfite ,anhydrous;
  Molecular Formula: Na2SO3
  Molecular Weight: 126.04
  Molecular Structure: 7757-83-7 Sodium sulfite

  Hazard Symbols:  Xn:Harmful;
  Risk Codes: R22:;
R36/37/38:;
  Safety Description: S24/25:;

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