Glycerol, or glycerine, it is an organic compound in whose structure there are three -OH groups (in other words it is a "triol").
Glycerin is a transparent and viscous liquid, soluble in water and very common in nature.

In the industrial field, glycerin is used to produce inks and resins.

In the pharmaceutical field, it is present in products designed for dressing, from syrups to tinctures.

Glycerin is also widely used in the food sector with the code E422, in particular in sweets and drinks to favor their conservation.
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IUPAC name1,2,3-propantriol
Alternative namestrihydroxypropane glycerin

General features
Molecular or molecular formula C3H8O3
Molecular mass (u) 92.10
Appearance colorless liquid
CAS number 56-81-5
EINECS number 200-289-5
PubChem 753
DrugBank DB04077
SMILES
C (C (CO) O) O

Physico-chemical properties
Density (g / cm3, in cs) 1.26
Complete water solubility at 293 K.
Melting temperature 18 ° C (291 K)
Boiling temperature> 290 ° C (> 560 K) with decomposition
Vapor pressure (Pa) at 473 K 6130

Thermochemical properties
ΔfH0 (kJ · mol − 1) −669.6
S0m (J K − 1mol − 1) 206.3
C0p, m (J K − 1mol − 1) 218.9
Flash point ~ 180 ° C (~ 450 K)
Auto-ignition temperature 400 ° C (673 K)
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