Methylene Chloride
Test items Index
Methylene Chloride % ≥99.95
Water % ≤0.01
Acid (HCl) % ≤0.0004
Chromaticity Hazen Unit(Pt-Co Color) ≤10
Residue after evaporation % ≤0.0005
Add stabilizer to the amount not included in the mass fraction of dichloromethane.
Packing:Net weight is 250kg iron drum.
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Anhydrous Sodium Sulfite |
Test items Food-grade High-purity grade Industrial-grade
Sodium sulfite (Na2SO3) % ≥ 97 98 97
Iron Fe % ≤ 0.001 0.001 0.003
Free Alkali (N... |
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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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Zinc phosphate |
Project Medicine raw material special-purpose Feed additive special-purpose Sweetening agent special-purpose Rubber special-purpose Paint special-p... |
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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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Sodium Sulphide |
Class 1 Class 2 Class 3
Test items Superior grade A first-rate product Acceptable product A first-rate product Acceptable product
Sodium Sulphid... |
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