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398039

Sigma-Aldrich

1,2-Propanediol

ACS reagent, ≥99.5%

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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:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

2.62 (vs air)

vapor pressure

0.08 mmHg ( 20 °C)

Assay

≥99.5%

form

liquid

autoignition temp.

779 °F

expl. lim.

12.5 %

impurities

≤0.0005 meq/g Titr. acid
≤0.2% water

ign. residue

≤0.005%

color

APHA: ≤10

refractive index

n20/D 1.432 (lit.)

bp

187 °C (lit.)

mp

−60 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤1 ppm

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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1 of 4

This Item
8228016033134368
1,2-Propanediol ACS reagent, ≥99.5%

Sigma-Aldrich

398039

1,2-Propanediol

1,2-Propanediol puriss. p.a., ACS reagent, ≥99.5% (GC)

Sigma-Aldrich

82280

1,2-Propanediol

1,2-Propanediol meets analytical specification of Ph. Eur., BP, USP, ≥99.5%

Sigma-Aldrich

16033

1,2-Propanediol

1,2-Propanediol ReagentPlus®, 99%

Sigma-Aldrich

134368

1,2-Propanediol

form

liquid

form

viscous liquid

form

liquid

form

liquid

refractive index

n20/D 1.432 (lit.)

refractive index

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

refractive index

n20/D 1.431-1.433, n20/D 1.432 (lit.)

refractive index

n20/D 1.432 (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

density

1.036 g/mL at 25 °C (lit.)

General description

1,2-Propanediol, a 1,2-alkanediol is an industrially important chemical. Due to its increasing demand many green methods have been proposed for its synthesis mainly using the inexpensive glycerol as the starting material. It is a raw material for the synthesis of intermediates, building blocks and polymers.

Application

1,2-Propanediol may be used in the following processes:
  • Green synthesis of propylene carbonate.
  • Production of lactic acid by green catalytic oxidation.
  • Propanal generation by catalytic dehydration.

Other Notes

The article number 398039-4X2L will be discontinued. Please order the single bottle 398039-2L which is physically identical with the same exact specifications.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

219.2 °F - closed cup

Flash Point(C)

104 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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25G
Pack Size/Quantity

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Catalytic Dehydration of 1,2-Propanediol into Propanal over Ag-Modified Silica-Alumina.
Sun D, et al.
Chemistry Letters (Jpn), 43(4), 450-452 (2014)
Efficient one-pot production of 1, 2-propanediol and ethylene glycol from microalgae (Chlorococcum sp.) in water.
Miao G, et al.
Green Chemistry, 17(4), 2538-2544 (2015)
Selective oxidation of 1,2-propanediol to lactic acid catalyzed by hydroxylapatite nanorod-supported Au/Pd bimetallic nanoparticles under atmospheric pressure.
Feng Y, et al.
J. Catal., 316, 67-77 (2014)
Catalytic conversion of ethyl lactate to 1,2-propanediol over CuO.
Zhang S, et al.
Chinese Journal of Chemical Engineering (2015)
Au/Pt/TiO2 catalysts prepared by redox method for the chemoselective 1, 2-propanediol oxidation to lactic acid and an NMR spectroscopy approach for analyzing the product mixture.
Redina E, et al.
Applied Catalysis A: General, 491, 170-183 (2015)

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