CAS 7681-57-4 Sodium Pyrosulfite, Sodium Metabisulphite Na2so5, Sodium Metabisulfite Gold

• CAS No.: 7681-57-4
• Formula: H2O5s2.2na
• EINECS: 231-673-0
• Certification: ISO
• Purity: ≥99%
• Type: Sodium Metabisulfite
• Model NO.: CAS 7681-57-4
• Appearance: Powder
• Grade Standard: Industrial Grade$Medicine Grade$Food Grade
• Melting Point: >300 °c (Lit.)
• Density: 1.48
• Storage: Store at +5°c to +30°c.
• pH: 3.5-5 (50g/L, H2O, 20ºC)
• Transport Package: 25kg/Bag
• Specification: industrial grade$Medicine Grade$food grade
• Trademark: Baovi
• Origin: China
• HS Code: 2832100000
• Production Capacity: 5000ton/Month

Product Description

CAS 7681-57-4 Sodium pyrosulfite, Sodium metabisulphite na2so5, Sodium metabisulfite gold 

 

Product Description

Sodium metabisulfite is white or yellow crystalline powder or small crystals, with a strong smell of SO2, the aqueous solution is acidic, and the contact with strong acid releases SO2 and generates the corresponding salts, long in the air, it is oxidized to Na2S2O6, so the product can not last long.
 

Technical  index:
 

Component	Industrial Grade	Food Grade	Medicine Grade
Appearance	White or yellowish crystalline powder
Assay(Na2S2O5 )	96.5%min	97%min	98%min
water insoluble matter	0.05%max	0.03%max	0.02%max
Iron content(Fe)	0.005%max	0.003%max	0.002%max
Arsenic content(As)	0.0001%max	0.0001%max	0.0001%max
Pb	0.0005%max	0.0005%max	0.0003%max

Application Area

Food: used as preservative, bleach, loosening agent.

Industry: Used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments;

Pharmaceutical: Industrial use in the production of insurance powder, sulfadimethylpyrimidine, caprolactam, etc., and the purification of chloroform, phenylpropanone and benzaldehyde.

Photographic industry: used as an ingredient in fixing agents.

Spice industry: Used in the production of vanillin.

Used as preservative in brewing industry, rubber coagulant and dechlorination agent after cotton bleaching.
Organic intermediates, dyes, tannery used as reducing agents used in electroplating industry, wastewater treatment in oil fields and as beneficiation agents in mines.

Packaging & Shipping

Packaging Details:25kg/bag or Ton bag  or  according to your request

Delivery Time:around 13 working days after receiving the deposit.

Port: Qingdao/Shanghai

Certifications

Company Profile

   Shandong Baovi Energy Technology Co., LTD. , located in Jinan City, Shandong Province, was founded in 2003, and it is a raw material supplier for the global organic chemical industry.The Company also participates in the production of small quantity of high value-added chemicals and intermediates.

Our Advantages

FAQ

Q1: what are your main products?
Our Products include solvents, antifreeze, anticorrosion, pigment, chemicals intermediates, etc. Widely used in agriculture,food sanitation and other fields.
 
Q2: Do you offer free samples?
A:Of course. We are always willing to offer free samples for our new clients.

Q3: Is there a Discount?
A.: Different quantity has different discount.

Q4:what is your payment?
For small order,you can pay by T/T,Western Union or Paypal, normal order by T/T to our company account.

1) How can I place order?
A: You can contact us by email about your order details, or place order on line.

2) How can I pay you?
A: After you confirm our PI, we will request you to pay. T/T and Paypal, Western Union are the most usual ways we are using.

Related products

Any questions and some other chemicals, please feel free contact EVA!

Thank you so much!