China (Mainland)
Diamondsupplier 
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
Sodium Sulphite Anhydrous CAS NO.7757-83-7 CAS NO.7757-83-7
- FOB Price: USD: 1.00-3.00 /Metric Ton Get Latest Price
- Min.Order: 1 Metric Ton
- Payment Terms: T/T,Other
- Available Specifications:
10KG(1-20)Metric Ton10KG(20-30)Metric Ton10g(1-20)Metric Ton
- Product Details
Keywords
- 7757-83-7
- 7757-83-7 Sodium Sulphite Anhydrous
- Sodium Sulphite Anhydrous
Quick Details
- ProName: Sodium Sulphite Anhydrous CAS NO.7757-...
- CasNo: 7757-83-7
- Molecular Formula: Na2SO3
- Appearance: crystal, powder
- Application: Pharmaceutical intermediates
- DeliveryTime: 1-2 days
- PackAge: as your request
- Port: Qingdao port
- ProductionCapacity: 10 Metric Ton/Day
- Purity: 99%
- Storage: stay in dry, cool and well-sealed
- Transportation: EMS,HK EMS,FEDEX,DHL,TNT
- LimitNum: 1 Metric Ton
- Moisture Content: 0.01%
- Impurity: 0.001%
- Loss On Drying: 0.2%
- Melting Point: 177℃ ~ 181℃
- Specific Rotation: +27°
- Assay: 99.2%
Superiority
hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and development production of reagent tens of thousands of species. our aim is quality strives for the survival. Seek development by credit reputation. Our products have big price advantage in Europe South America and so on .and Our company also has the advantage of high quality in Africa. in the past two years our products has reached more than 30 countries in the world, Europe. South America. North America, southeast Asia, Africa, etc. We welcome all over the world with the best quality and lowest price friend common cooperation and common development!
Details