1,2-Propanediol

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Other names/abbreviations:

1,2-Propylene glycol

Empirical formula:	C3H8O1
CAS-Number:	57-55-6
EINECS-Number:	200-338-0

Chemical properties

Solubility
Water: Soluble (20 °C) [1]

Biological properties

Acute toxicity:

Safety

Symbol: -
R-phrases: -
S-phrases: -

Physical properties

Appearance
	Physical state @ 20°C:	Liquid [1]
	Color:	Colourless [1]
	Odor:	Characteristic [1]

Bulk properties
	Molecular weight (g/mol):	76.10 [1]
	Melting point (°C):	-59 [1]
	Boiling point (°C):	184 - 189 [1]
	Ignition temperature (°C):	410 [1]
	Flash point (°C):	103 [1]
	Explosion limits (vol. %):	2.6-12.6 [1]
	Thermal decomposition (°C):	Above boiling point [1]
	Density (g/cm3):	1.04 (20 °C) [1]

Optical properties
	Refractive index:	1.43 (20 °C) [1]

Misc.
	Vapour pressure (Pa):	20 (Approximately, 20 °C) [1]

References

1: Merck. ChemDAT The Merck Chemical Database Ver. 1.1.5

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© Michael Pilgaard
Created: November 3, 2008