Glycerin is colorless transparent sticky liquid, without unpleasant odor, slightly sweet, soluble in ethanol, water and few inorganic matters, insoluble in chloroform, ether, benzene, carbon disulfide and oils.
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Item |
Index |
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High class |
First class |
Second class |
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Appearance |
Transparent liquid |
Transparent liquid |
Transparent liquid |
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Color Hazen |
≤20 |
≤30 |
≤30 |
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Glycerin % |
≥99.5 |
≥98.0 |
≥95.0 |
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Density（20℃）g/ml |
≥1.2598 |
≥1.2559 |
≥1.2481 |
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Chloride（as Cl）% |
«0.001 |
«0.01 |
—— |
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Sulfatizing ash% |
≤0.01 |
≤0.01 |
≤0.05 |
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Acidity or Alkalinity(mmol/100g) |
≤0.05 |
≤0.10 |
≤0.30 |
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Saponification Equivalent( mmol/100g) |
≤0.40 |
≤1.0 |
≤3.0 |
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As mg/kg |
≤2 |
≤2 |
—— |
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Heavy metals（as Pb）mg/kg |
≤5 |
≤5 |
—— |
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Reductive matter |
No precipitation or silver mirror |
—— |
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Application: widely used in painting industry, textile dyeing, food and other areas.
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