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1 . Carbon disulfide
Item |
Index |
Superior product |
First grade product |
Qualified product |
Appearance |
Colorless transparent liquid |
Colorless transparent liquid |
Colorless transparent liquid |
Leached ratio（45.6~46.6ºC,101.3KPa）V/V% ≥ |
97.5 |
97.0 |
96.0 |
Density（20ºC） g/ml |
1.262~1.265 |
1.262~1.267 |
1.262~1.267 |
Volatiles % ≤ |
0.005 |
0.007 |
0.01 |
Iodine reduced product（H2S ）,% ≤ |
0.0002 |
0.0005 |
0.0008 |
Sulfate |
Tested |
Tested |
-- |
Free acid |
Tested |
Tested |
-- |
Sulfur and other sulfide |
Tested |
Tested |
-- |
2 . Phosphorus pentasulfide
Item |
Index |
Superior product |
First grade product |
Qualified product |
Appearance |
Yellow |
Yellow and green |
Yellow and green |
Phosphorus （P） % |
27.6~28.2 |
27.3~28.3 |
26.7~28.6 |
Sulfur （S）% |
71.7~72.3 |
71.0~72.5 |
70.0~73.0 |
Final melting pointºC ≥ |
276 |
274 |
273 |
Melting span ºC ≤ |
2 |
3 |
3 |
Iron （Fe ） % ≤ |
0.004 |
0.01 |
-- |
Diethyl phosphorodithionic acid % ≥ |
85 |
85 |
85 |
diisobutyl dithio phosphoric acid% ≥ |
95 |
92 |
90 |
Size |
Flake or Powder |
Flake or Powder |
Flake or Powder |
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