polypropylene glycol

polymer

Polypropylene glycol (PPG) is a synthetic polymer formed by the polymerization of propylene oxide, creating a hydroxyl-terminated polyether with tunable molecular weight and hydrophobic character. It is widely used in polyurethane foam production, lubricants, hydraulic fluids, and cosmetic/personal care formulations where its low-temperature fluidity and chemical stability are valued. Engineers select PPG over polyethylene glycol when hydrophobic properties and resistance to water absorption are critical, and over mineral oils when synthetic performance, biodegradability, and consistent viscosity-temperature behavior are required.

polyurethane foams (flexible and rigid)industrial lubricants and hydraulic fluidscosmetics and personal care productssurfactants and emulsifiersthermal transfer fluidsadhesives and sealants

Compliance & Regulations

?UL 94?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	-103.9	°F	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

polypropylene glycol

Thermal Properties

Regulatory Screening

Environmental

Safety & Biocompatibility