Item	Chinese standard	Company standard
Item	GB1893-2008	Company standard
Main content(Na2S2O5)	≥96.5	≥97.5
Fe(As content Fe)	≤0.003	≤0.0015
Clarity	Pass test	Clear
Heavy metal content (Pb)	≤0.0005	≤0.0002
Arsenic content (As)	≤0.0001	≤0.0001

Molecular Formula:Na2S2O5

Molecular Weight:190.10

Appearance: white crystal powder.

Packing: polypropylene weaving bag, paper plastic complex bag and kraft lined with polyethylene plastic bag.

Net weight: 25, 50, 1000 kilograms per bag or according to demands from customers

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Weifang Shengkai Chemical Co., Ltd.

Mr. Li: +86-13964710056

Phone: +86-17863657832

E-mail: eva.chen@shengkaichem.cn

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