1,2-Pentanediol

CAS NO.：5343-92-0
Empirical Formula: C5H12O2
Molecular Weight: 104.15
MDL number: MFCD00010736
EINECS: 226-285-3
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-12 18:45:48

What is 1,2-Pentanediol?

Description

1,2-Pentanediol, also known as 1,2-dihydroxypentane, is a colorless and odorless liquid which is miscible with water and polar organic solvents. It is a chiral molecule with one stereocenter. The compound is usually made by treating a mixture of 1-pentene and formic acid with hydrogen peroxide at<100 ℃. An optically active R-enantiomer of 1,2-pentanediol can be prepared by fermentation.

Chemical properties

CLEAR COLOURLESS TO SLIGHTLY YELLOW OILY LIQUID

The Uses of 1,2-Pentanediol

1,2-Pentanediol is used in synthesizing quinoxalines from biomass-derived glycols. Also used in the synthesis of propiconazole (P770100) a fungicide as well as other antifungals.

The Uses of 1,2-Pentanediol

pentylene glycol is an alcohol with humectant and anti-bacterial properties.

Flammability and Explosibility

Non flammable

Properties of 1,2-Pentanediol

Melting point:	50.86°C (estimate)
Boiling point:	206 °C (lit.)
Density	0.971 g/mL at 25 °C (lit.)
vapor pressure	1.5Pa at 20℃
refractive index	n20/D 1.439(lit.)
Flash point:	104 °C
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
solubility	Chloroform (Soluble), Methanol (Slightly)
pka	14.49±0.20(Predicted)
form	Liquid
color	Clear colorless to light yellow
Water Solubility	miscible
BRN	1732199
CAS DataBase Reference	5343-92-0(CAS DataBase Reference)
EPA Substance Registry System	1,2-Pentanediol (5343-92-0)

Safety information for 1,2-Pentanediol

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.