Polypropylene, isotactic

CAS 25085-53-4[CH2CH(CH3)]nPolymer Science

Polypropylene, isotactic (CAS: 25085-53-4) is a versatile hydrophobic polymer characterized by its crystalline structure. With an average molecular weight of approximately 250,000 g/mol, it exhibits a melting point of 189 °C and a glass transition temperature of -26 °C. Its density is 0.9 g/mL at 25 °C. Isotactic polypropylene is widely employed in materials science for its excellent mechanical properties and chemical resistance, serving as a fundamental building block in various industrial applications.

Synonyms: [CH2CH(CH3)]nPolypropylenePropylene

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Polypropylene, isotactic ([CH2CH(CH3)]n) — chemical structure, CAS 25085-53-4; Materials Science, fine chemical supplied by Tech Serve Solutions

Hydrophobic PolymersMaterials ScienceOlefinsPolymer SciencePolymersPropylene More...

01 /Applications

Materials Science Research

Isotactic polypropylene serves as a model crystalline polymer for fundamental research in polymer physics and materials science, enabling studies into morphology, mechanical behaviour, and thermal properties.

Packaging Industry

Its toughness, flexibility, and barrier properties make it suitable for a range of packaging applications, including films, containers, and closures.

Textile Manufacturing

Polypropylene fibres are utilized in the production of carpets, upholstery, and non-woven fabrics due to their durability, resistance to moisture, and stain resistance.

Automotive Components

The material's impact resistance and low density make it a preferred choice for manufacturing various automotive parts, contributing to vehicle weight reduction.

02 /Properties

Linear formula	[CH2CH(CH3)]n
Density	0.9 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.49(lit.)
Autoignition temp	>674 °F
Melting point	189 °C(lit.)

03 /Safety & handling

Protective equipment	Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
Water hazard class (WGK, DE)	3

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

04 /Identifiers & registry

CAS number

25085-53-4

MDL number

MFCD00084447

PubChem substance

24850994

05 /Additional specifications

Mol Wt	average Mw ~250,000 by GPC
Transition Temp	Tg −26 °C

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 isotactic polypropylene used for?

Isotactic polypropylene is used in materials science research, packaging, textile manufacturing, and in the production of automotive components.

What is the CAS number and chemical formula for isotactic polypropylene?

The CAS number for isotactic polypropylene is 25085-53-4. Its linear formula is [CH2CH(CH3)]n.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies isotactic polypropylene with an average Mw of ~250,000 by GPC. TSS does not represent this product as USP, BP, or EP grade.

What are the key safety considerations when handling isotactic polypropylene?

Handling requires appropriate personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The autoignition temperature is >674 °F.

How is isotactic polypropylene packed, shipped, and exported?

Isotactic polypropylene is available in various quantities and is packed securely for domestic and international shipment, adhering to all relevant export regulations.