Specification: industry grade HG/T 2074-1991 JIS K 1476-1995
food grade GB 2682-1995

Item	90%	88%	85%	food grade
Na2S2 O4	More than 90%	More than 88%	More than 85%	More than 85%
(Fe)	Less than 20ppm	Less than 20ppm	Less than 20ppm	Less than 20ppm
(Zn)	Less than 1ppm	Less than 1ppm	Less than 1ppm	Less than 1ppm
Clarity	Clarify	Clarify	Clarify	Clarify
EDTA				Qualified
(As)				Less than 1ppm
Other heavy metals(pb)				Less than 1ppm
HCHO				Less than 0.05%
water insoluble matter	Less than 0.05%	Less than 0.05%	Less than 0.05%

Uses
1, It is for vat dyes staining the reducing agent, reducing hair bleaching agents, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing agents and objects of the peel color dye vat cleaning agent in the textile industry.
2, It is used as a mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in pulp and paper industry.
3, It is used as sugar, candy, candied fruit, caramel, cookies, fans, etc. bleach and food preservation agent in the food industry.
4, As a bleaching agent is widely used to restore the kaolin bleaching; fur whitening bleaching and restore; bamboo products and straw products such as bleach.
5, It is used as a reducing agent in chemical industry.
6, Packing: Barrels sealed packaging, polyethylene film bag lined with double-layer 15KG/20KG/25KG/50KG/100KG/200KG

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sodium dithionite

Specifications

Product Description

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