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GLYCERINE
Glycerine (glycerol) is a tristomic alcohol, the simple polyol compound.
Glycerine is a thick, oily, colourless and odourless liquid, with a sweet taste, which is widely used in pharmaceutical formulations. Glycerine has three hydrophilic hydroxyl groups, which determine the solubility of glycerine in water and its hygroscopicity. The glycerine backbone is the central part of all lipides known as triglycerides.
Molecular formula: C3H8O3
Molecular weight: 92,09
CAS No.: 56-81-5
| Items |
Value for Glycerine |
| Appearance |
colourless liquid |
| Glycerine, min. content |
≥ 99,7% |
| Density, g/ml, at 20°C |
1,2644 |
| pH (100g/l H2Î, 20°C) |
~ 5,0 |
| Melting point of Glycerine |
18°C |
| Boiling point of Glycerine |
290°C, Decomposition > 290°C |
| Flash point |
177°C |
| Ignition point |
~ 429°C |
| Index of light refraction |
1,472 |
| Surface tension at 20°C |
64,00 mN/m |
| Temperature coefficient |
–0,0598 mN/(K*mol) |
| Colour of Glycerine |
2 |
| Water content, % (m/m), max. |
0,10 |
| Sulphated ash content, % (m/m), max. |
0,01 % |
| Acidity (amount of used NaOH in ml), max. |
0,10 ml |
| Chlorides, ppm, max. |
< 5 ppm |
| Halogen derivatives content, ppm, max. |
< 35 ppm |
| Esters content (amount of used HCl in ml) |
8,8 ml |
| Polysaccharide content |
withstands Eur.Ph.2005 |
| Heavy metals content, ppm, max. |
< 5 ppm |
| Aldehyde content, max. |
< 5 ppm |
Application of Glycerine:
- Food additive E422 for foodstuffs and drinks – for water retention and as a solvent and sweetener
- Filler for products with low fat content (like cookies)
- Thickener in liqueurs
- Substitute of sugar
- In Pharmaceutical and Cosmetics industry for production of syrups, elixirs, soap, shaving creams, toothpaste, skin care and hair care products
- As a binder for tablets production
- As a wound-healing substance, for lubrication and wetting
- For nitroglycerine production
- Antifreeze production with the depression of the freezing temperature to –37,8 °C with 60-70 % glycerine content in water
- In paint production
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