HaMi HongShan Chemistry Co., Ltd.
chairman: +86-13809900079
Sales Manager: +86-13809902360
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Products
PRC National Standard: GB/T 10500 — 2009
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PRC National Standard: GB/T 10500 — 2009
|
Item |
Index |
|||||
|
Category I |
Category II |
Category III |
||||
|
superior quality |
top grade |
qualified |
top grade |
qualified |
||
|
sodium sulphide (Na2S) content ≥ |
60.0 |
60.0 |
60.0 |
60.0 |
60.0 |
65.0 |
|
sodium sulfite (Na2SO3) ≤ |
2.0 |
－ |
－ |
－ |
－ |
－ |
|
thiosulfuric acid (Na2S2O3) |
2.0 |
－ |
－ |
－ |
－ |
－ |
|
iron (Fe) content ≤ |
0.03 |
0.12 |
0.20 |
0.003 |
0.005 |
0.08 |
|
sodium carbonate (Na2CO3) ≤ |
3.5 |
5.0 |
－ |
2.0 |
3.0 |
4.0 |
|
water insoluble content ≤ |
0.20 |
0.40 |
0.80 |
0.05 |
0.1 |
0.3 |
| Specifications | sodium sulphide(Na2S) | ≥ 60%(60% min) |
| Iron(Fe) | ≤ 0.15%(0.15% max) | |
| sodium carbonate(Na2CO3) | ≤ 5.0%(5.0% max) | |
| water insoluble | ≤ 0.40%(0.4% max) | |
| Packaging | 25kg plastic bag | |
| Uses |
Raw material in leather making, paper making, mineral separation, pesticide, dyes and other chemical industries |
|
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