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Leather treatment Sodium Metabisulfite Industrial Grade 4.5 PH Value CAS 7681-57-4

Categories Sodium Pyrosulfite
Brand Name: OEM
Model Number: sodium pyrosulfite-3
Certification: SGS,ISO 9001
Place of Origin: Hunan
MOQ: 1 metric ton
Price: usd 300 per metric ton
Payment Terms: T/T , L/C
Supply Ability: 3000 tons per month
Delivery Time: 5-8 days
Packaging Details: 25 kgs bag,1000 kgs big bag
name: smbs sodium pyrosulfite leather chemical
other name: sodium metabisulfite leather chemical
PH value: 4.5
usage: leather chemical,bleaching chemical
purity: SO2: 65%
mocular: Na2S2O5
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Leather treatment Sodium Metabisulfite Industrial Grade 4.5 PH Value CAS 7681-57-4


Product Description

1. Detail description of sodium metabisulfite 65%min

CAS NO.: 7681-57-4
EINECS: 231-673-0
MF: Na2S2O5
Apperance: white powder

2. Specification of sodium metabisulfite 65%min

Indextech gradefood grade
Main Content97%min97%min
Water insoluble0.05%max0.05%max
PH Value4.0-4.64.0-4.6

3. Application of sodium metabisulfite 65%min

1):Bleaching agent for textile fibres, paper pulps
2):Colors stripper and dechlorination
3):Preparation of Indigo Vat Dye
4):solubilizing and acidyfing agent for leather industries
5):wastewater treatment

Packaging & Shipping

in 25kg/50kg bags for sodium metabisulfite 65%min

Appearance: white free flowing fine crystal or powder.
Property: white or light yellow crystal powder, a strong smell of sulfur dioxide, relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity, and its solubility will become large while raising the temperature and is less to dissolve in ethanol.
Packing: packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement.


Sodium metabisulfit

Appearance:White Free Flowing Fine Crystal or Powder

Industrial grade

1) Purity (calculated with Na2S2O5): 96%

2) Iron (Fe): 0.005%

3) SO2: 65%

4) PH value: 4.0-4.6

5)Water insoluble matter: 0.05%

Foodstuff grade

1) Purity (calculated with Na2S2O5): 98%

2) Iron (Fe): 0.0005%

3) Arsenic (As): 0.0002%

4) pH value: 4.0-4.6

5) Water insoluble matter: 0.05%

6) Heavy metal (Cal. in Pb): 0.002%

Package:25kg, 50kg pp woven bag with plastic lining, or 1000kg per package

1.Dye printing mordant.

2.Textile antichlor after being bleached.

3.Reducing agent and sulfonating agent for chemical and medical use.

4.Bamboo, wood, paper fiber bleaching agent, non-ferrous metal ore dressing agent, waste water treating , rubber freezing agent.

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);
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 piable dose and wearproof dose; sewage treatment, and so on.
3). Pharmaceutical grade: in chemical synthesis in the production of acrylic fibre, vitamin k, vitmin A, pharmaceutical intermediates, etc.
4). Photo grade: the sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.


The details of the product as follow:

Sodium Metabisulfite
Molecular Formula: Na2S2O5
Molecule Weight: 190.12
CAS NO.:7681-57-4
UN: 2693

Storage: store the products in dry and cool place.

Product Description

We are a main supplier of 98% Sodium Metabisulfite in China. We can supply you 98% Sodium Metabisulfite with competitive price.

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