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Glycerol 98% Extrapure
Confirming to IP
1,2,3-Propanetriol; Glycerol
Product Code. |
01291 |
Grade |
Extrapure |
Purity |
98% |
CAS No. |
56-81-5 |
Molecular Formula |
C3H8O3 |
Molecular Weight |
92.09 |
H.S.Code |
2905.45000 |
Shelf Life |
60 Months |
Physical state at 20 °C |
Liquid |
Colour |
Clear colorless |
Odour |
Odorless |
pH value |
5.5 - 8 |
Melting point/ Freezing point [°C] |
20 °C |
Auto-ignition temperature [°C] |
370°C |
Flash point [°C] |
160 °C |
Boiling point [°C] |
182 °C |
Vapour pressure mm/Hg |
0.0033 mm Hg at 50 °C |
Vapour density |
3.18 |
Density [g/cm3] |
1.25 |
Solubility in water [% weight] |
Soluble in water |
Explosion limits -lower [%] |
0.90% |
Appearance | A clear, colourless or almost colourless, odourless; very hygroscopic,syrupy liquid |
Assay | 98.0 - 101.0% |
Identification as per IP | To comply |
Clarity (50% w/v in distilled water) | Clear |
Color (10 ml of 50% w/v solution diluted to 25 ml) | Colorless |
Refractive index (20°C; 589 nm) | 1.470 - 1.475 |
Acidity | Max 0.2 ml of 0.1 N NaOH required for 50 ml of 50% w/v solution |
Alkalinity | NIL |
Heavy metal (as Pb) | Max 0.0005% |
Iron (Fe) | Max 0.0004% |
Chloride (Cl) | Max 0.0025% |
Sulphate (SO4) | Max 0.003% |
Aldehyde and reducing substance | To Pass IP test |
Ester | Min 8.0 ml of 0.1M HCl required to decolorise the 50 ml of 50% w/v solution of glycerin in water |
Sugar | To pass IP test |
Sulphated ash | Max 0.01% |
Water (H2O) | Max 2% |