China Factory Supply CAS 7757-83-7 Industrial Grade 97% Sodium Sulfite Anhydrous with Competitive Price

• CAS No.: 7757-83-7
• Formula: Na2so3
• EINECS: 231-821-4
• Certification: ISO
• Purity: 97%, 96%, 93%Min
• Type: Sodium Sulfate
• Model NO.: FJL-Na2SO3-1
• Appearance: White Crystalline Powder or Lump
• Grade Standard: Industrial Grade
• Product Name: Industial Sodium Sulfite Anhydrous
• Density: 2.63
• Molecular Weight: 126.04
• Melting Point: 500 °c
• Samples: Avaliable
• Transport Package: Woven Bag
• Specification: 25kg/bag, 50kg/bag, 1000kg/bag
• Trademark: FJL
• Origin: China
• Production Capacity: 50000mt/Year

Product Description

Product Description

    

                                                                                   
       China Factory Supply CAS 7757-83-7 Indusrial grade 97% Sodium Sulfite anhydrous with competitive Price                                                                                                                    

Product Description

English name	Sodium sulfite Anhydrous(Industrial grade)
CAS NO.	7757-83-7
EINECS NO.	231-821-4
Molecular Formula	Na2SO3
Appearance	White crystalline powder
Melting point	500 °C
Quality Standard	HG/T 2967-2010

 

 Properties: white fine crystal or powder, easily soluble in water; absorb moisture; odorless, non-toxic. 

In the field of water treatment, sodium sulfite is used as a deoxidizer for boiler water and oilfield water injection, and as a dechlorination agent for municipal or industrial water.

In wastewater treatment, it is used to reduce hexavalent chromium salt to low toxicity trivalent chromium salt, and can precipitate and separate silver from wastewater. At present, sulfite is mostly used in small and medium-sized boilers and boilers operating under pressure less than 5.88MPa, usually with 2% ~ 10% solution. The dosage of sodium sulfite is usually 0. 076g/L. It is best to add appropriate amount of catalyst, such as Cu, Co, Mn, Ni salts, can improve the rate of oxygen removal. When the boiler is out of use, it can be filled with alkaline deoxygenating water which has been deoxygenated and about 200mg/L sodium sulfite to protect the metal from corrosion. 

In addition, as a deoxidizer for water injection in oil field, as long as lOmg/L sodium sulfite is added, the corrosion of dissolved oxygen on well pipe can be controlled.

In addition, sodium sulfite in chemical production as a raw material for the production of sodium thiosulfate, is also the stabilizer of viscose fiber, beer bottle fungicide, glass mirror and SLATE engraving agent, fabric bleaching components and deoxidizer, photosensitive industrial developer, etc.

Specifications

Product Analysis

Industrial Grade  Sodium sulfite Anhydrous(Industrial grade)

 

 

Item	Index
	Premium	First grade	ordinary goods
Main content(Na2S2O5) %≥	97	96	93
Fe content %≤	0.003	0.005	0.02
Water insoluble matter%≤	0.02	0.03	0.05
Free base (Na2SO3)%≤	0.1	0.4	0.8
Sodium sulfate(Na2SO4)%≤	2.5	--	--
Sodium chloride(Nacl)%≤	0.1	--	--

Application

Preservative, bleaching agent and antioxidant in food industry.
Water treatment as reductant.
Bleaching agent for textile fibers, paper pulps.
Printing and dyeing industry as a dechlorinating agent and cotton scouring agent.
Ore dressing agent in mining industry.
Fixative ingredients in photographic industry.
Production of oral, topical and parenteral pharmaceutical products
Solubilizing and acidifying agent for leather industry.
Rubber industry as coagulator.
Anticorrosion and bleaching treatment in wooden products.
Producing concrete water reducing agents in construction industry.

Packaging & Shipping

 Packaging :

25, 50, 1000 kg/bag or customized according to customer requirements, external polypropylene woven bag, lined with polyethylene plastic bag, paper-plastic composite bag, kraft paper bag, etc.

                                  

About us

Qingdao Fangjinlong Technology Development Co.,Ltd is located in Qingdao City, Shangdong Province . Established in 2010 and honored every day since.

Fangjilong 's mission is  providing unparalleled quality and service in every aspect of our operations, As a chemical expert and supplier, the company has invested 2 chemical plants and it relies on the research and development of technology of the Environmental Science and Engineering of Ocean university of China .

The main products are including water treatment chemicals ,Mining chemicals,industrial chemicals and some special use chemicals . Fangjinlong undertakes and provides support for market-driven research,strives for commercialization of the technologies to benefit the industry and the society at large, as well as  to promote the economic growth and sustainability of the earth.  begin your partnership with Fangjinlong , please contact us.
 

 
  Attend Shanghai  &Japan 2023 Chemical EXHIBITION

Certifications

 

FAQ

1.What kind of payment term do you support ?
T/T 30% in advance, 70% before delivery,we will take and show you every process details.

2.What's your terms of delivery?
EXW, FOB, CIF etc 

3.How long will your production take ?
Normally 5-7days finish production, then delivery.

4.if u support to sample test?
Sure, we would love to offer you free sample for testing. You only need to pay the shipping fee ok. 

5.How to choose the most suitable products?
Based on your industry, also your requirements, we will recommend ones for you.

Contact us