Properties: Yellow solid, corrosive, hygroscopic, easily soluble in water. Aqueous solution appears alkali.
Packaging: 25kg grey webbing bag lined with plastic film.

Item\index GB 10500-2009

First quality

Na2S ω/ %≥

60

Fe ω/ ppm≤

0.0030

Water insoluble ω/%  ≤

0.05

Na2CO3 ω/%  ≤

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Na2SO3 ω/%  ≤

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Na2S2O3 ω/%  ≤

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Appearance: yellow flaky , even size without lumpy matter, thickness≤2mm