Aluminum Tripolyphosphate
Model APW-1 APW-2 ATP
Phosphorus pentoxide(%) ≥ 42.5-46.5 35.0-40.0 64-68
Aluminum oxide(%) ≤ 11.0-15.0 9.5-13.5 13-17
Silica(%) ≤ 13.5-17.0 11.5-15.5
Zinc oxide(%) ≤ 15.0-18.0 26.0-30.0
Density (g / cc) ≤ 2.0-3.0 2.0-3.0
Hydrotropes content(%) ≤ ≤1.0 ≤1.0 ≤1.0
Oil Obsorption(g oil / 100g sample) ≤ 35±10 35±10
Fineness(45mm sieve residues)(%) ≤ ≤0.5 ≤0.5 ≤0.5
Water extract PH Value 5.5-7 5.5-7 2.5-3.5
Moisture (%) ≤ ≤3.0 ≤3.0 ≤3.0
Package: woven bags lined with plastic bags, 40kg/bag.
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Sodium Sulphide |
Class 1 Class 2 Class 3
Test items Superior grade A first-rate product Acceptable product A first-rate product Acceptable product
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Potassium dichromate |
Item Index
Potassium dichromate (K2Cr2o7) % ≥ 99.7
Chlorides (Cl)% ≤ 0.05
Insoluble ≤ 0.02
Sulfates ( SO4-2) % ≤ 0.02
Na+ % ≤ 0... |
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Zinc oxide |
Test items Indirect method Direct method
Zinc oxide(counted by dried substances )% ≥ 99.7 99.5
Metal ( Zn ) % ≤ None None
Lead oxide( Pb ... |
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Zinc sulfate |
Testing Items monohydrate heptahydrate
Appearance White powder --
Zinc Sulphate content % ≥ 96.09 99
Zn % ≥ 35 22.51
Pb % ≤ 0.001 0.00... |
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Toluene-2,4-diisocyanate |
Test items Index
Isocyanate % ≥99.0
Saponifiable chlorine % ≤0.01
Chlorine % ≤0.04
Crystallizing point℃ % 5.0-6.5
Chromaticity (Hazen... |
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