Poly(propylene glycol)

CAS 25322-69-4H[OCH(CH3)CH2]nOHPolymer Science

Poly(propylene glycol), CAS 25322-69-4, with the linear formula H[OCH(CH3)CH2]nOH, is a versatile polymer with an average molecular weight of approximately 425 g/mol. This hydrophobic polymer, also known as PPG, is characterised by its ether linkage and terminal hydroxyl groups. It finds utility in various industrial applications, including as a component in polyurethanes, hydraulic fluids, and as a surfactant. Its properties make it a valuable material in polymer science and materials engineering.

IUPAC: PPG,Poly(propylene oxide)
Synonyms: PPG,Poly(propylene oxide),Propylene Glycol Polymer

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Poly(propylene glycol) (H[OCH(CH3)CH2]nOH) — chemical structure, CAS 25322-69-4; Materials Science, fine chemical supplied by Tech Serve Solutions

EthersHydrophobic PolymersMaterials SciencePolymer SciencePolymersPropylene Glycol More...

01 /Applications

Polyurethane Component

Poly(propylene glycol) serves as a key building block in the synthesis of polyurethanes. Its incorporation influences the flexibility, resilience, and chemical resistance of the final polyurethane product.

Hydraulic Fluids and Lubricants

The lubricating properties and thermal stability of Poly(propylene glycol) make it suitable for use in hydraulic fluids and other lubricating applications. It offers good viscosity characteristics over a range of temperatures.

Surfactant Intermediate

As a hydrophobic polymer with reactive hydroxyl end groups, PPG can be functionalised to create surfactants. These surfactants are employed in a variety of industrial processes and formulations.

Materials Science Research

Poly(propylene glycol) is utilised in materials science research for developing novel polymers and composites. Its predictable structure and reactivity allow for controlled material design and property tuning.

02 /Properties

Linear formula	H[OCH(CH3)CH2]nOH
Density	1.004 g/mL at 25 °C
Refractive index	n20/D 1.447
Vapour pressure	<0.01 mmHg (20 °C)
Vapour density	>1 (vs air)
Viscosity	80 cSt(25 °C)(lit.)
Contains / stabiliser	130-190 ppm proprietary phenolic antioxidant

03 /Safety & handling

Protective equipment	Eyeshields, Gloves
Flash point	229 °C / 444.2 °F
Water hazard class (WGK, DE)	1

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

25322-69-4

MDL number

MFCD00084446

PubChem substance

24852053

05 /Additional specifications

Mol Wt	average Mn ~425
Hydroxyl Value	263 mg KOH/g

06 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

07 /Frequently asked questions

What is Poly(propylene glycol) used for?

Poly(propylene glycol) is used as a component in polyurethanes, hydraulic fluids, lubricants, and as an intermediate for surfactants. It is also employed in materials science research for developing new polymers and composites.

What is the CAS number and formula for Poly(propylene glycol)?

The CAS number for Poly(propylene glycol) is 25322-69-4, and its linear formula is H[OCH(CH3)CH2]nOH.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Poly(propylene glycol) with an average molecular weight of approximately 425 g/mol. This product is typically a technical or research grade. Tech Serve Solutions does not represent this product as USP, BP, or EP grade.

What are the safety considerations for Poly(propylene glycol)?

When handling Poly(propylene glycol), it is recommended to use eyeshields and gloves for personal protection. The flash point is 229 °C (444.2 °F), and it has a low vapor pressure at 20 °C. Consult the Safety Data Sheet for comprehensive handling information.

How is Poly(propylene glycol) packed and shipped?

Tech Serve Solutions exports fine chemicals globally. Specific packaging and shipping details for Poly(propylene glycol) will be provided based on your order requirements and destination.

How can I request a sample or quote for Poly(propylene glycol)?

To request a sample or a quote for Poly(propylene glycol), please contact our sales team through the website or by phone. Provide your contact details and the quantity required.