CAS 25322-69-4 Polypropylene glycol - Materials / Alfa Chemistry

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Polypropylene glycol

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Catalog Number

ACM25322694-22

CAS Number

25322-69-4

Product Name

Polypropylene glycol

Structure

Category

Hydrophobic Polymers

Synonyms

PPG;Polyoxypropylene;Oxirane, methyl-, homopolymer;Propane-1,2-diol, propoxylated

Description

Polypropylene glycol appears as colorless liquid that is odorless or has a mild sweet odor. May float or sink in water. (USCG, 1999)

IUPAC Name

2-(2-Hydroxypropoxy)propan-1-ol

Molecular Weight

134.17g/mol

Molecular Formula

(C3H6O)n.H2O

Canonical SMILES

CC(CO)OCC(C)O

InChI

DUFKCOQISQKSAV-UHFFFAOYSA-N

InChI Key

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

Boiling Point

>300 °C

Melting Point

-40 °C

Flash Point

230 °C

Density

1.01g/ml

Solubility

Lower molecular weight members are sol in water;Infinite;In water: PPG 425, >10,000 mg/L; PPG 1000, >1,000 mg/L; PPG 2000, 250 mg/L; PPG 2700, 15 mg/L

Application

Polypropylene glycol is a versatile, colorless liquid known for its viscosity, which varies based on its molecular structure. Its primary purpose is to serve a wide range of industries as it functions effectively as a hydraulic fluid, rubber lubricant, antifoam agent, and intermediary in the production of urethane foams. Additionally, it plays a crucial role in the formulation of adhesives, coatings, elastomers, plasticizers, and paints. As a macromolecule made of repeating propyleneoxy units, it is compatible with solvents such as acetone, benzene, chloroform, dioxane, tetrahydrofuran (THF), toluene, and water, enhancing its utility in various laboratory and industrial applications.

Color/Form

Clear, lightly colored, slightly oily, viscous liquids

Complexity

65.3

Covalently-Bonded Unit Count

EC Number

500-039-8;203-416-2

Exact Mass

134.094294g/mol

Formal Charge

Heavy Atom Count

MeSH Entry Terms

2-(2-hydroxypropoxy)-1-propanol

Monoisotopic Mass

134.094294g/mol

Other Experimental

/PPG 400/ Specific gravity: 1.007 at 25 °C; Pour point: -49 °C; Index of refraction: 1.445 at 25 °C;/PPG 400/ Density: 1.01 g/mL at 20 °C; Index of refraction: 1.447 at 20 °C; Viscosity: approximately 100 mPa-sec at 20 °C;/PPG 750/ Specific gravity: 1.004 at 25 °C; Pour point: -44 °C; Index of refraction: 1.447 at 25 °C;/PPG 1200/ Density: 1.00 g/mL at 20 °C; Index of refraction: 1.450 at 20 °C; Viscosity: approximately 270 mPa-sec at 20 °C;/PPG 1200/ Specific gravity: 1.007 at 25 °C; Pour point: -40 °C; Index of refraction: 1.448 at 25 °C;/PPG 2000/ Specific gravity: 1.002 at 25 °C; Pour point: -30 °C; Index of refraction: 1.449 at 25 °C;/PPG 2000/ Density: 1.00 g/mL at 20 °C; Index of refraction: 1.451 at 20 °C; Viscosity: approximately 450 mPa-sec at 20 °C;/PPG 3000/ Specific gravity: 1.001 at 25 °C; Pour point: -29 °C; Index of refraction: 1.449 at 25 °C;/PPG 4000/ Specific gravity: 1.005 at 25 °C; Pour point: -26 °C; Index of refraction: 1.450 at 25 °C;Does not crystallize

Rotatable Bond Count

RTECS Number

TR5250000;TR5600000;TR5950000

Stability

Quite stable chemically

UNII

WNY0H4G53Q

Vapor Pressure

<0.01 mm Hg at 20 °C /contains 130-190 ppm proprietary phenolic antioxidant/

XLogP3

-0.7

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