Specification :

Technical Index:
(GB/T10500-2000)
Index Item Index
First Quality: Qualified
Content of Sodium Sulfide,%: 60, 60
Content of Iron(Fe),%: 0.003, 0.0054
Content of Water Insoluble,%, 0.05, 0.1
Content of Sodium Carbonate,%: 2, 3

(Q/FH04-2005)

Extraordinary Good: Best Quality
Content of Sodium Sulfide,%: 60, 60, 60, 60
Content of Iron(Fe),%: 0.001, 0.002, 0.003, 0.005
Content of Water Insoluble,%: 0.01, 0.01, 0.05, 0.1
Content of Sodium Sulfite,%: 0.3, 0.4,
Content of Sodium Thiosulfate,%: 0.8, 0.8
Content of Sodium Carbonate,%: 1, 1.5, 2, 3
Appearance: Yellow,flaky,even,no agglomeration Thickness2mm.

know more in www.world-sodiumsulfide.com