pure Glycerin
pure Glycerin
I. Executive Standard:
1) The PRC national standard GBB206-91 is implemented in production of industrial glycerol
2) The Chinese Pharmacopoeia is implemented in production of medical glycerol
3. Technical Requirements
1) Properties: Colorless or slightly yellow transparent and viscous liquid.
2) Physiochemical Indexes: Conform with the following table
Item Type
Saponification crude glycerol
Cosmetic glycerol
Medical glycerol
Appearance
Transparent without suspended matter
Transparent without suspended matter
Transparent without suspended matter
Odor
No peculiar smell
No peculiar smell
No peculiar smell
Color HAZEN
≤40
≤30
≤20
Glycerol content %
≥95.0
≥98.0
≥99.5
Density (20°C)G/ML
≥1.25003
≥1.25033
≥1.2572
Chloride(CL)%
≤0.01
0.001
Sulfate ash %
≤0.05
≤0.03
≤0.01
Acidity or alkalinity MMOL/100G
≤0.30
≤0.10
≤0.064
Saponification equivalent MMOL/100G
≤3
≤0.60
≤0.60
Reducing substances
Deposit or silver mirror
free
Arsenic content MG/KG
≤2.0
Heavy metal content MG/KG
≤5.0
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