Glycerin

Melting point

20   °C (lit.)

Boiling point

290   °C

Density

1.25   g/mL (lit.)

Vapor density

3.1   (vs air)

Vapor pressure

<1   mmHg (20 °C)

FEMA

2525   | GLYCEROL

Refractive index

n20/D   1.474 (lit.)

Flash point

320   °F

Storage condition

Store   at +5°C to +30°C.

Solubility

H₂O:   5 M, 20 °C, clear, colorless

Acidity coefficient (pKa)

14.15   (at 25°C)

Form

Viscous   liquid

Color

APHA:   ≤10

Specific gravity

1.265   (15/15°C) 1.262

Odor

Odorless

pH value

5.5-8   (25°C, 5M in H₂O)

pH range (indicator)

5.5   - 8

Aroma type

Odorless

Biological source

Synthetic   (organic)

Explosive limit

2.6-11.3%(V)

Water solubility

>500   g/L (20 °C)

Thermal conductivity

0.285   W/(m·K) at 25 °C

Maximum wavelength (λ_max)

λ: 260 nm Amax: 0.05    λ: 280 nm Amax: 0.04

Sensitivity

Hygroscopic

Merck

144484

JECFA Number

909

BRN

635685

Henry's Law Constant

4.7×106 mol/(m3Pa)4.7×106mol/(m3Pa) at   25°C, Burkholder et al. (2019)

Exposure Limits

OSHA:   TWA 15 mg/m33; TWA 5 mg/m33

Dielectric Constant

47.0   (Ambient)

Stability

Stable.   Incompatible with perchloric acid, alumina, acetic anhydride, nitrobenzene,   ammonia, peroxides, strong acids, strong bases. Combustible.

Cosmetic Ingredient Function

HUMECTANT    SKIN CONDITIONING - HUMECTANT    DENATURANT    FRAGRANCE    SOLVENT    SKIN PROTECTING    VISCOSITY CONTROLLING    PERFUMING    ORAL CARE    HAIR CONDITIONING

Cosmetic Ingredient Assessment

Glycerol   (56-81-5)

InChI

1S/C3H8O3/c4-1-3(6)2-5/h3-6H,1-2H2

InChIKey

PEDCQBHIVMGVHV-UHFFFAOYSA-N

SMILES

OCC(O)CO

LogP

-2.32

Surface Tension

64   mN/m at 20°C

CAS Database

56-81-5   (CAS DataBase Reference)

NIST Chemical Information

1,2,3-Propanetriol   (56-81-5)

EPA Chemical Information

Glycerine   (56-81-5)

Absorption

≤0.02≤0.02 at   280 nm in H₂O at 0.5M    ≤0.07≤0.07 at 260 nm in H₂O at 0.5M

Hazard   Symbol

None ("Xi" may be   used for high concentrations)

Transport   Classification

Non-restricted goods

Toxicity

Rat oral LD50 > 20 mL/kg