Sodium Metabisulfite:white or light yellow crystal powder, a strong smell of sulfur dioxide. food , industry, high purity grade.
sodium metabisulfite
Sodium Metabisulfite is a white to slightly yellowish crystalline powder with sulfur dioxide odor; readily soluble in water. Sodium metabisulfite containing more than 65.0% SO2 w/w releases sulfur dioxide gas when mixed with water. It forms a bisulfite adduct with aldehyde and with ketones to a sulfonic acid. It is used to purify or isolate aldehydes and ketones. Sodium metabisulfite's reductive and sulfonating properties provide versatile applications. It is used as an oxygen scavenger to eliminate the dissolved oxygen in waste water and in pipes.
1==Sodium Metabisulphite For Food Use
Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:White or light yellow crystalline powder
Quality standard: GB1893-86 CAS 7681-57-4
Test Item | Standard Request. | Results of Test | Individual Result |
Appearance | White or light yellow crystalline powder | Meet the demand | Pass |
Content(Na2S2O5%) | ≥95% | 97.26% | Pass |
SO2% | ≥65% | 65.55% | Pass |
Fe% | ≤0.005% | 0.003% | Pass |
Insoluble substance in water% | ≤0.05% | 0.01% | Pass |
Heavy metal (Pb)% | ≤0.002% | 0.001% | Pass |
As% | ≤0.0002% | 0.0001% | Pass |
PH | 4.0-4.6 | 4.3 | Pass |
Main uses:
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)
Packaging:in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.
Netweight:25,50,1000kilograms per bag or following your demand.
2==Sodium Metabisulphite For Industrial Use
Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:white or light yellow crystalline powder.
Quality standard:HG/T28261997 CAS 7681-57-4
Test Item | Standard Request. | Results of Test | Individual Result |
Appearance | White or light yellow crystalline powder | Meet the demand | Pass |
Content(Na2S2O5%) | ≥95% | 97.26% | Pass |
SO2% | 65% | 65.55% | Pass |
Fe% | ≤0.005% | 0.003% | Pass |
Insoluble substance in water% | ≤0.05% | 0.01% | Pass |
Heavy metal (Pb)% | ≤0.002% | 0.001% | Pass |
As% | ≤0.0002% | <0.0001% | Pass |
PH | 4.0-4.6 | 4.3 | Pass |
Main uses:
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 stapk;
Treatment agent of waste water;
Rubber solidifying agent Perfume industry is served as hydrocarbon perfume aldehyde;
The hide profession employ to do to molt dose and pliable dose and wearproof dose ;
The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on;
sewage treatment. etc
Packing: in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.
Net weght: 25, 50, 1000 kilograms per bag or according to demands from customers.
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