Sodium Metabisulfite 99% CAS No. 7681-57-4 Sodium Pyrosulfite

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2o5s2
• Model NO.: 7681-57-4
• Purity: ≥99%
• Type: Sodium Metabisulfite
• Appearance: Powder
• Grade Standard: Industrial Grade
• Molecular Weight: 190.107
• Fusing Point: 150 Degrees
• Water Solubility: Soluble
• Density: 1.48g/cm3
• Transport Package: Bag
• Specification: 99%
• Trademark: TG
• Origin: China
• HS Code: 2832100000
• Production Capacity: 200000

Product Description

Product Description

 

Sodium pyrosulfite is white or yellow crystalline powder or small crystals, with a strong SO2 odor, specific gravity 1.4, soluble in water.

The aqueous solution is acidic, and the contact with strong acid releases SO 2 and generates the corresponding salt, which is oxidized to Na 2S 2O 6 in the air for a long time, so the product can not last for a long time. Above 150 degrees Celsius, it breaks down to SO 2.

 

Detailed Photos

 

 

Product Parameters

 

tem	Quality Index
	Food Grade	Industry Grade
Water	98.0% min	96.0% min
ulfate	65.0% min	65.0% min
Readily carbonisable substances	0.0002% max	-
Barium	0.0005% max	-
Calcium	0.0005% max	-
Lead(PB)	0.001% max	0.002% max
Iron	0.02% max	0.05% max
Chloride	4.0-4.8	4.0-4.8

Application

 

(1) Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose agent (e.g. bread, cracker etc); Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).

(2) Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after
bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .

(3) Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.

(4)Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.

Storage:Store the product in a dry and cool place.

 

 

Packaging & Shipping

 

Company Profile

 

Hunan Iron Zirconium Import&Export Co.Ltd is a company focusing on the export of chemical products.Our company own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas.We will use professional production technology to bring you the best product experience.we are looking forward to cooperating with you.

FAQ

 

Q1:Which kind of payment terms do you accept?
A:For small order,you can pay by T/T,Western Union or Paypal,nomal order by T/T to our company account

Q2:Can you give me a discount price?
A:Surely, price is negotiable under different conditions, we are assuring you to get the most competitive price.

Q3:How can I get the sample?
A:We can support the sample for free, freight charges will undertaken by buyer. The charges will be return to you or deduct from your order in the future.

Q4:How can we guarantee the quality?
A:We always keep pre-production sample before mass production, and final inspection before shipment. Our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, 
we will send you free goods for replacement or refund your loss. 

Q5: How about the packing?
A: Factory standard packing. Special packing can be accept per your request.