202320

Poly(propylene glycol)

average M_n ~1,000

• 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: 24852055
• NACRES: NA.23
• vapor pressure: <0.01 mmHg ( 20 °C)

Properties

• vapor density: >1 (vs air)
• Quality Level: 200
• vapor pressure: <0.01 mmHg ( 20 °C)
• mol wt: average M_n ~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

Description

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.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): 445.0 °F - closed cup
• Flash Point(C): 229.44 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves