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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Sodium metabisulfite |
Test items Refined High-purity grade Food-grade Industrial-grade
Sodium metabisulfite % ≥ 98.5 98 97.5 97.0
Iron Fe % ≤ 0.0005 0.001 0.0015... |
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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/... |
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Sodium cyanide |
Test items Index
Shape Lump
Sodium cyanide (NaCN) % ≥98.0
Sodiun hydroxide (NaOH) % ≤0.5
Sodium carbonate (Na2CO3) % ≤0.5
Water (H2O... |
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Ammonium sulfate |
Test items Index
Exterior White crystalline
Nitrogen ％ ≥ 21
Water (Ｈ2Ｏ) ％ ≤ 0.2
free carbonic acid (H2SO4)％ ≤ 0.03
Iron (Fe) ％ ≤ 0... |
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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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