Surface Coating / Alfa Chemistry

Polypropylene glycol, average Mn ~2700

Cat.No ACM25322694-14

Basic Information Description Application Features And Benefits
CAS 25322-69-4
Catalog Number ACM25322694-14
Synonyms PPG, Poly(propylene oxide)
Molecular Weight average Mn ~2,700
Molecular Formula H[OCH(CH3)CH2]nOH
Canonical SMILES CC(O)CO
InChI 1S/C6H14O3/c1-5(8)4-9-6(2)3-7/h5-8H,3-4H2,1-2H3
Density 1.004 g/mL at 25 °C
Contains 130-190 ppm proprietary phenolic antioxidant
MDL Number MFCD00084446
PubChem ID 24852057
Quality Level 200
Refractive Index n20/D 1.451
Storage Temperature 2-8°C
Vapor Density >1 (vs air)
Vapor Pressure <0.01 mmHg ( 20 °C)
Description Polypropylene glycol or polypropylene oxide is a polymer of propylene glycol. Chemically it is a polyether, and more generally, it is a polyalkylene glycol.
Application PPG is used in many polyurethane formulations.
PPG is used as surfactant, wetting agent and dispersing agent in leather finishing.
PPG is also used as a tuning reference and calibrator in mass spectrometry.
PPG is used as the main ingredient in the manufacture of paintballs.
Features And Benefits The polymer is liquid at room temperature. As the molar mass increases, the solubility in water decreases rapidly. Secondary hydroxyl groups in PPG are less reactive than primary hydroxyl groups in polyethylene glycol. PPG is less toxic than PEG, so PPG is now used to produce biotech products.

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