202355

Poly(propylene glycol)

average M_n ~4,000

• Synonym(s): PPG, Poly(propylene oxide)
• Linear Formula: H[OCH(CH₃)CH₂]_nOH
• CAS Number: 25322-69-4
• MDL number: MFCD00084446
• UNSPSC Code: 12162002
• PubChem Substance ID: 24852058
• NACRES: NA.23

Properties

• vapor density: >1 (vs air)
• Quality Level: 100
• vapor pressure: <0.01 mmHg ( 20 °C)
• description: functionality 1.7
• mol wt: average M_n ~4,000
• impurities: ≤0.035% Water (Karl Fischer)
• viscosity: 1,300 cP(25 °C)(lit.)
• hydroxyl value: 28 mg KOH/g
• solubility: H₂O: <0.01 % (w/w) at 25 °C
• density: 1.004 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

Description

General description

Poly(propylene glycol) (PPG) is a hydrophobic polyether that is widely used in various biomedical areas such as preparation of biocompatible polyurethanes and lubricious coatings on absorbable sutures.

Application

Poly(propylene glycol) can be used:

• As a precursor to synthesize biodegradable poly(ether-ester) networks via UV photopolymerization.
• As a stabilizing agent in the preparation of metal nanoparticles such as gold nanoparticles.
• As a starting material to prepare silane-terminatedpoly(urethane-urea)s (SPUR) polymers.

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 445.0 °F - closed cup
• flash_point_c: 229.44 °C - closed cup
• ppe: Eyeshields, Gloves