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Merck
CN

202320

Poly(propylene glycol)

average Mn ~1,000

Synonym(s):

PPG, Poly(propylene oxide)

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About This Item

Linear Formula:
H[OCH(CH3)CH2]nOH
CAS Number:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
Vapor pressure:
<0.01 mmHg ( 20 °C)
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vapor density

>1 (vs air)

Quality Segment

vapor pressure

<0.01 mmHg ( 20 °C)

mol wt

average Mn ~1,000

contains

130-190 ppm proprietary phenolic antioxidant

refractive index

n20/D 1.449

viscosity

150 cSt(25 °C)(lit.)

hydroxyl value

111 mg KOH/g

solubility

water: miscible (completely)

density

1.005 g/mL at 25 °C

SMILES string

CC(O)CO

InChI

1S/C6H14O3/c1-5(8)4-9-6(2)3-7/h5-8H,3-4H2,1-2H3

InChI key

DUFKCOQISQKSAV-UHFFFAOYSA-N

General description

Poly(propylene glycol) (PPG) is a biocompatible polymer widely used as a precursor to fabricate biomedical materials. It is soluble in water at low temperatures and becomes insoluble at high temperatures.

Application

Poly(propylene glycol) can be used:
  • As a precursor to synthesize multiblock thermo-responsive smart polymers for various biomedical applications. The presence of PPG is the main reason for the thermosensitivity of these polymers. For example, it can be used to synthesize poly(ester urethane)s.
  • For the surface modification of sisal fiber to enhance nucleating ability.


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Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

445.0 °F - closed cup

flash_point_c

229.44 °C - closed cup

ppe

Eyeshields, Gloves



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