High purity sodium sulfite.

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Product Details

Product Description

Product Description
Appearance: White Powde
Purity: % 99min
PH :7-10 for Normal grade. PH:6-8 for viscose grade
Properties: white fine crystal or powder, easily soluble in water; absorb moisture; odorless, non-toxic.
In the field of water treatment, sodium sulfite is used as a deoxidizer for boiler water and oilfield water injection, and as a dechlorination agent for municipal or industrial water. In wastewater treatment, it is used to reduce hexavalent chromium salt to low toxicity trivalent chromium salt, and can precipitate and separate silver and mercury from wastewater. At present, sulfite is mostly used in small and medium-sized boilers and boilers operating under pressure less than 5.88MPa, usually with 2% ~ 10% solution. The dosage of sodium sulfite is usually 0. 076g/L. It is best to add appropriate amount of catalyst, such as Cu, Co, Mn, Ni salts, can improve the rate of oxygen removal. When the boiler is out of use, it can be filled with alkaline deoxygenating water which has been deoxygenated and about 200mg/L sodium sulfite to protect the metal from corrosion. When removing excess free chlorine from water, sodium sulfite should be used in combination with sodium bisulfite or sulfur dioxide. In addition, as a deoxidizer for water injection in oil field, as long as lOmg/L sodium sulfite is added, the corrosion of dissolved oxygen on well pipe can be controlled. In addition, sodium sulfite in chemical production as a raw material for the production of sodium thiosulfate, is also the stabilizer of viscose fiber, beer bottle fungicide, glass mirror and SLATE engraving agent, fabric bleaching components and deoxidizer, photosensitive industrial developer, etc.
Sodium Sulfite Fabric Bleach Anhydrous Sodium Sulphate

Sodium Sulfite Fabric Bleach Anhydrous Sodium Sulphate

Analysis of certificate:

Term	Quality Index
Term	Industry Grade	Food Grade
Purity ( As Na2SO3)	96.0% min	98.0% min
Sodium sulphate ( SO4)	2.5% max	1.5% 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

Application
Sodium Sulfite Fabric Bleach Anhydrous Sodium Sulphate

Packing
Our packages range from 25kg to one ton, and we have our own packing system to keep the goods in good condition during the whole packing and shipping process.