CAS No. 7681 -57-4 Sodium Pyrosulfite

Model NO.
99%
Colour
White
Transport Package
25kg Bag, 1000kg Bag
Specification
99%
Trademark
SW
Origin
China
HS Code
2832100000
Production Capacity
2000ton
Reference Price
$ 270.00 - 450.00
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Product Description

Product Description
Sodium metabisulfite is white or yellow crystalline powder or small crystal, with a strong SO2 odor, soluble in water, the aqueous solution is acidic, when contacted with strong acid, SO2 is released to form corresponding salts, and it is oxidized to Na2S2O6 when placed in the air for a long time. Therefore, the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.
Specification
Na2S2O5 %≥
96%~98%
FERRON(Fe) %≤
0.005
WATER INSOLUBLE %≤
0.05
As %≤
0.0001
HEAVY METAL(Pb) %≤
0.0005
CAS No. 7681-57-4 Sodium Pyrosulfite
CAS No. 7681-57-4 Sodium Pyrosulfite
CAS No. 7681-57-4 Sodium Pyrosulfite
 
Application
No.1. Used as a coagulant in the rubber industry.

No.2. Used as chromatographic reagents, preservatives and reducing agents in the dye and pharmaceutical industries.

No.3. In the food industry, it is used as bleaching agent, preservative, bulking agent, antioxidant, color retention agent and
preservative.
 
No.4. In the printing and dyeing industry, it is used as a dechlorination agent for cotton cloth after bleaching, and as a cotton scouring aid.

No.5. The tanning industry is used for leather processing.
 
No.6. The chemical industry is used to produce hydroxyvanillin, hydroxylamine hydrochloride, etc. The photosensitive industry is used as developer and so on.
FAQ:
Q1: May I get sample before placing order?
Re: Yes, Sample are available. For small samples is free and you just need to bear the freight;

Q2: Which payment is available for your company?
Re: T/T, L/C at sight. You can choose the one which is convenient for you.

Q3: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier within 2 days(DHL, FedEx, TNT etc.)
For large quantity products, shipping by sea is worthwhile.It will cost days to weeks to come to your destination port, which depends on where the port is.

Q4: Is there any possible to use my appointed label or package?
Re: Yes. If needed, we'd like to use label or package according to your requirement.

Q5: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are qualified. We will have goods tested and provide COA before delivery for sure.

 

Organic Intermediate

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