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398039

Sigma-Aldrich

1,2-Propanediol

ACS reagent, ≥99.5%

Synonym(s):

1,2-PDO, Propylene glycol

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About This Item

Linear Formula:
CH3CH(OH)CH2OH
CAS Number:
57-55-6
Molecular Weight:
76.09
Beilstein:
1340498
EC Number:
200-338-0
MDL number:
MFCD00064272
UNSPSC Code:
12352100
PubChem Substance ID:
24864713
NACRES:
NA.21
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grade

ACS reagent

Quality Level

200

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%

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Show Differences

1 of 4

This Item
13436882281W294004
1,2-Propanediol ACS reagent, ≥99.5%

398039

1,2-Propanediol

1,2-Propanediol ReagentPlus®, 99%

134368

1,2-Propanediol

1,2-Propanediol tested according to Ph. Eur.

82281

1,2-Propanediol

Propylene glycol ≥99.5% (GC), FCC, FG

W294004

Propylene glycol

assay

≥99.5%

assay

99%

assay

-

assay

≥99.5% (GC)

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

400

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.)

refractive index

n20/D 1.432 (lit.)

refractive index

n20/D 1.432 (lit.)

refractive index

n20/D 1.432 (lit.)

refractive index

n20/D 1.432 (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

mp

−60 °C (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

bp

187 °C (lit.)

General description

1,2-Propanediol, a 1,2-alkanediol[1] 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.[1][2][3][4][5][6] It is a raw material for the synthesis of intermediates, building blocks and polymers.[7]

Application

1,2-Propanediol may be used in the following processes:
  • Green synthesis of propylene carbonate.[8]
  • Production of lactic acid by green catalytic oxidation.[9][10]
  • Propanal generation by catalytic dehydration.[11]

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
  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    WXBD2167V
    WXBD5794V
    WXBD4779V
    WXBD4222V
    MKCN8246

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    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)
    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)
    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)
    Reactive Extraction of 1, 3-Propanediol with Aldehydes in the Presence of a Hydrophobic Acidic Ionic Liquid as a Catalyst.
    Matsumoto M, et al.
    Solvent Extraction Research and Development, Japan, 22(2), 209-213 (2015)
    View All Related Papers

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