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.