Product name:Low ferric sodium sulfide(Na2S.2 4/5H2O)
Properties: mixture. Appearance is yellow flaky matter
Packaging: 25kg/bag. Inner bag is woven bag, sewn by machine; the intermediate layer is plastic film, sealed by heat; Outer bag is ink gray netted woven bag, sewn by machine.
Cautions:avoid rain, moisture and heat, no breakage, no mix with corrosive matter.
Uses:Mainly used in medicine, top-grade paper, PPS plastic, leather, printing and dyeing, or dressing industry
Technical index:
Item |
Index |
||
Top grade |
First grade |
Qualified grade |
|
Na2S £¨%£© ≥ |
60.00 |
60.00 |
60.00 |
Na2SO3 £¨%£© ≤ |
0.60 |
0.60 |
0.80 |
Na2S2O3 £¨%£© ≤ |
1.20 |
1.40 |
1.60 |
Fe content, £¨%£© ≤ |
0.0020 |
0.0030 |
0.0050 |
Water insoluble £¨%£© ≤ |
0.03 |
0.05 |
0.05 |