Potassium dichromate
Item Index
Potassium dichromate (K2Cr2o7) % ≥ 99.7
Chlorides (Cl)% ≤ 0.05
Insoluble ≤ 0.02
Sulfates ( SO4-2) % ≤ 0.02
Na+ % ≤ 0.03
Moisture % ≤ 0.5
Package: 50kg plastic woven bag with plastic bag inner
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Zinc sulfate |
zinc sulfate monohydrate Zinc sulfate heptahydrate
Molecular Formula: ZnSO4 .H2O Molecular Formula:ZnSO4 .7H2O
HG2934-2000 HG/T 2326-2005
CAS... |
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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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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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Cupric sulfate |
Test items Superior grade Feed-grade
Cupric sulfate(CuSO4.5H2O) % ≥ 98 98.5
Acidity (H2SO4) % ≤ 0.2 0.2
Water insoluble matter % ≤ 0.2 ... |
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