Merck
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12279

Supelco

1,2-Propanediol

analytical standard

Synonym(s):
1,2-PDO, Propylene glycol
Linear Formula:
CH3CH(OH)CH2OH
CAS Number:
Molecular Weight:
76.09
Beilstein:
1340498
EC Number:
MDL number:
PubChem Substance ID:
E Number:
E490
NACRES:
NA.24

Quality Level

grade

analytical standard

vapor density

2.62 (vs air)

vapor pressure

0.08 mmHg ( 20 °C)

assay

≥99.7% (GC)

autoignition temp.

779 °F

shelf life

limited shelf life, expiry date on the label

expl. lim.

12.5 %

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

refractive index

n20/D 1.432 (lit.)
n20/D 1.433

bp

187 °C (lit.)

mp

−60 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

application(s)

cleaning products
cosmetics
environmental
flavors and fragrances
food and beverages
forensics and toxicology
personal care
pharmaceutical (small molecule)

format

neat

SMILES string

CC(O)CO

InChI

1S/C3H8O2/c1-3(5)2-4/h3-5H,2H2,1H3

InChI key

DNIAPMSPPWPWGF-UHFFFAOYSA-N

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General description

1,2-Propanediol is a compound found to be chemically similar to ethylene glycol and is widely used in automobile antifreeze, activated charcoal preparations, cosmetics, beverages, ointments, etc. It is used as a diluent for the intravenous preparations of poorly water-soluble drugs.

Application

1,2-Propanediol may be used as an analyte protectant for the gas chromatography-mass spectrometric detection of environmental contaminants in honey, honeybees and pollens. It is also used as an analytical reference standard for the quantification of the analyte in biological fluids using headspace-gas chromatography (HS-GC) technique.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

217.4 °F - closed cup

Flash Point(C)

103 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Protocols

GC Analysis of Glycols on Nukol™

99%; Glycerol, ≥99.5%; Tetraethylene glycol, 99%

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