CAS; 7757-83-7 Na2so3 China Supplier 96%Min Sodium Sulfite Anhydrous White Crystal Powder

• CAS No.: 7757-83-7
• Formula: Na2so3
• EINECS: 231-821-4
• Model NO.: 7757-83-7
• Type: Pharmaceutical Intermediates
• Appearance: Powder
• Quality: Industrial
• Colour: White
• Refractive Index: 1.484
• Density: 2.63G/Cm3
• Solubility: Soluble in Water, Difficult to Dissolve in Ethanol
• External View: White Crystalline Powder
• Transport Package: 25kg/ Bag
• Specification: 25kg/ bag
• Trademark: baoqu
• Origin: China
• HS Code: 2832100000
• Production Capacity: 50, 000 Tons/Year

Product Description

Product Description

Items	Standard	Analytical result
Main content (Na2SO3)	96% min	96.80%
Fe	0.005%max	0.00%
Free alkali	0.1% max	0.10%
Sulfate (as Na2SO4)	2.5%max	2.00%
Water insolubles	0.02% max	0.01%
Conclusion	The goods up to the requirement of standard

 

Detailed Photos

 

 

Applications

1.Used as bleaching agent,preservative,loosening agent and antioxidant in food industry.It is also used in pharmaceutical synthesis and as a reducing agent  in the production of dehydrated vegetables.

2.It used as dye reducing agent in the smelting of various cotton fabrics to improve the products' whiteness.the textile industry is used as a stabilizer for man-made fibers.

3.The paper industry is used as a lignin remover.

4.The electronics industry is used to manfacture photoresistors.
Used as a developer in photosensitive industry.

5.The water treatment industry is used for electroplating wastewater,drinking water trestment,etc.

6.Used as a reducing agent in the organic industry is in production to prevent the oxidation of semi-finished products during the reaction process.

7.Used to produce cellulose sulfite,sodium thiosulfate.

Packaging & Shipping

FAQ

1, Q: Can you supply samples for testing?
A: Yes, Our samples are free for your testing,
However, you need to afford the delivery fee (DHL/TNT/EMS)
The delivery fee will be deducted from the future bulk order.
2, Q: What documents you provide for every shipment?
A: Usually, Commercial invoice, Packing list, Bill of lading, COA, Certificate of origin,
MSDS are promised. Other documents you need for import,
please feel free to contact us.
3,Q: How can i get the price for this product?
A: Please give us the exact quantity,packing,destination port and
other necessary information,we will give you quotation according
to your specific requirments.
4,Q: How about delivery lead time?
A: Delivery lead time: About 7-10 days after payment confirmed.(Chinese holiday not included).
5,Q:How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T,Western Union or Paypal or secure payment. 

 

Company Members

 

It is mainly used as artificial fiber stabilizer, fabric bleaching agent, photographic developer, dye bleaching deoxidizer, fragrance and dye reducing agent, lignin removal agent for papermaking, etc.