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) ≤50
Density (20℃)g/cm3 1.21-1.23
Refractive index n020 1.564-1.568
Acidity (HCI) ≤0.04
2.4-TDI Structure isomer ≤64.0
2.6-TDI Structure isomer ≤36.0
Packing:Net weight is 250kg iron drum.
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Dimethylamine |
Appearance: colorless transparent liquid.
Dimethylamine ≥ 99.8%;
Monomethylamine ≤ 0.10%;
Trimethylamine ≤ 0.05%;
Ammonia ≤ 0.03%; |
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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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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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Dimethylamine |
Appearance: colorless transparent liquid.
Dimethylamine ≥ 99.8%;
Monomethylamine ≤ 0.10%;
Trimethylamine ≤ 0.05%;
Ammonia ≤ 0.03%;
Purposes: m... |
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Sodium Carbonate |
Indicator name Industrial-grade Food grade
Total alkali content(Na2CO3)% ≥ 99.2 99.2
Sodium chloride(NaCl)% ≤ 0.7 0.7
Iron(Fe)% ≤ 0.003... |
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