398039

Sigma-Aldrich

1,2-Propanediol

ACS reagent, ≥99.5%

Synonym(s):
1,2-PDO, Propylene glycol
Linear Formula:
CH3CH(OH)CH2OH
CAS Number:
Molecular Weight:
76.09
Beilstein/REAXYS Number:
1340498
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

ACS reagent

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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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.

Packaging

2 L in poly bottle
25, 500 mL in poly bottle

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 Germany

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

Certificate of Analysis

Certificate of Origin

One-pot tandem processing of glycerol stream to 1, 2-propanediol with methanol reforming as hydrogen donor reaction.
Vasiliadou ES, et al.
Applied Catalysis. B, Environmental, 163, 258-266 (2015)
Catalytic conversion of ethyl lactate to 1,2-propanediol over CuO.
Zhang S, et al.
Chinese Journal of Chemical Engineering (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)
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)
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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