Polyether polyol
Model Hydroxyl value Water content Acid value pH value Potassium Chromaticity Viscosity Degree of unsaturation
mgKOH/g % mgKOH/g mg/Kg APHA mPa.s/25℃ mol/Kg
GEP-560S 54.0-58.0 ≤0.08 ≤0.05 5-7 ≤3 ≤50 400-600 -
GSE-3048 46.5-49.5 ≤0.05 ≤0.05 - - ≤50 - ≤0.01
GEP-560 54.0-58.0 ≤0.08 ≤0.05 5-7 ≤3 ≤50 400-600 -
GEP-330N 33.5-36.5 ≤0.05 ≤0.05 5-7 ≤3 ≤50 750-950
GEP-330NY 33.5-36.5 ≤0.05 ≤0.08 5-7 ≤3 ≤50 750-950
GEP-828 26.0-30.0 ≤0.05 ≤0.08 5-7 ≤5 ≤50 950-1450
GEP-628 26.0-30.0 ≤0.05 ≤0.05 - ≤5 ≤80 1500-2100
GEP-360N 26.5-29.5 ≤0.05 ≤0.08 - ≤5 ≤80 1100-1600
GEP-570 23.5-26.5 ≤0.08 ≤0.08 5-7 ≤5 ≤200 1400-1800
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Coconut shell activated carbon |
Item Index
Iodine value(mg/g) ≥ 900
Filling density(g/cm3) 0.45
Loss on drying(%) ≤ 10
Strength(%) ≥ 97
PH value 6-8
Granularity (ey... |
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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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Hydrochloric acid |
Item Index
Total acidity(HCI) ≥ 31.0
Iron(Fe) ≤ 0.002
Residue on ignition % ≤ 0.05
Free chlorine(CI)% ≤ 0.004
Arsenic(As)% ≤ 0.... |
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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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Arsenic trioxide |
Main content Other impurities
Arsenic trioxide Iron Lead Chlorine Chromium Cadmium Water
As2O3 Fe Pb Cl Cr Cd H2O
≥ ≤ ≤ ≤ ≤ ≤... |
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