202304

Poly(propylene glycol)

average M_n ~425

• 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: 24852053
• 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 ~425
• contains: 130-190 ppm proprietary phenolic antioxidant
• refractive index: n20/D 1.447
• viscosity: 80 cSt(25 °C)(lit.)
• hydroxyl value: 263 mg KOH/g
• solubility: water: miscible (completely)
• 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

Application

Poly(propylene glycol) can be used:

• As a plasticizer as it does not crystalize, has a low glass transition temperature, and is biocompatible. For example, it can be used in the plasticization of polylactic acid.
• To prepare the aqueous biphasic system for the recovery of ectoine from Halomonas salina cells.
• To study the virtual transition from supramolecular polymer(PPG) toconventional polymer(PPO).

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