1-9 Kilogram
$0.60
≥10 Kilogram
$0.10
Sodium sulfite, chemical Na2SO3, common sulfite, white, monoclinic crystal or powder. It can irritate eyes, skin and mucous membrane and pollute water. High thermal decomposition produces toxic sulfide smoke. In industry, it is mainly used for making cellulose ester of sulfite, sodium thiosulphate, organic chemicals, bleaching fabric, etc., as reducing agent, antiseptic and chlorination agent.
Item | Quality Index | |
Industry Grade | Food Grade | |
Purity ( As Na2SO3) | 96.0% min | 98.0% min |
Sodium sulphate ( SO4) | 2.0% max | 1.0% max |
Chlorides ( As NaCL) | 0.5% max | 0.1% max |
Arsenic ( As ) | - | 0.0002% max |
Heavy metals ( As Pb ) | - | 0.0005% max |
Iron (Fe) | 0.005% max | 0.002% max |
Water insolubles | 0.05% max | 0.02% max |
1. For the preparation of a trace analysis of tellurium and determination of niobium and developing, also used as a reducing agent.
2.For synthetic fiber fabric bleaching agent, stabilizer, photographic developer, dye bleaching deoxidizer, perfume and dye reduction agent, lignin removal agent.
3. Used as ordinary analytic reagent and photosensitive resistance materials.
4. Reductive bleaching agent, the food has strong inhibitory effects on plant food bleaching effect and the oxidase.
5.For a variety of cotton fabric scouring of cotton fiber, can prevent local oxidation and influence of fiber strength, and improve the whiteness of boiling.
6.In food industry,it used as a bleaching agent, preservative, osteoporosis agent, antioxidant.
7.It used in the production of sulfite cellulose ester, sodium thiosulfate, organic chemicals, such as bleaching fabrics.
Qingdao Sigma chemical Co., Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.
The aim of Qingdao Sigma chemical Co., Ltd is a quality policy that "Elements in the system all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.
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