Polypropylene, isotactic (PP) is a semi-crystalline thermoplastic polymer known for its heat resistance, chemical stability, moisture resistance, and durability. This stereoregular polypropylene grade is useful for polymer research, material testing, formulation studies, and comparative evaluation of polyolefin materials.
This isotactic polypropylene product has an approximate molecular weight of 220,000 and is suitable for laboratory workflows involving thermoplastic characterization, processing evaluation, polymer compatibility, and materials development.
Key Properties
- Isotactic polypropylene resin for polymer research and material evaluation
- Approximate molecular weight: ~220,000
- CAS Number: 25085-53-4
- Linear formula: [-CH2CH(CH3)-]n
- Synonym: PP
- Glass transition temperature (Tg): -8°C
- Refractive index: 1.474
- Melting point range: 176-186°
Applications
Polymer Research
Used in laboratory studies involving polypropylene structure, crystallinity, thermal behavior, and material performance.
Material Testing
Suitable for evaluating thermoplastic properties, polymer compatibility, and comparative performance against other polyolefin materials.
Formulation & Processing Studies
May be used in research workflows involving polymer blends, resin evaluation, prototype formulations, and process development.
Reference & Comparative Studies
Useful as a polypropylene material for controlled comparisons in polymer science, plastics research, and materials development.
Solubility & Compatibility
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Soluble in: Chlorinated hydrocarbons, aromatic hydrocarbons, and isoamyl acetate
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Polymer type: Semi-crystalline thermoplastic polyolefin
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Chemical resistance: Resistant to moisture, acids, and bases under many use conditions
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Compatibility: Performance depends on solvent system, temperature, concentration, and processing conditions
Final material behavior depends on formulation, processing history, solvent exposure, and test conditions. Evaluate compatibility under the intended application environment.
Preparation Tips
- Confirm compatibility with the intended solvent, polymer blend, or processing system before scale-up.
- Use controlled mixing and processing conditions to support consistent dispersion or incorporation.
- Evaluate thermal behavior under target processing conditions before use in formulation studies.
- Document solvent, temperature, concentration, and mixing conditions for reproducible results.
Handling & Storage
- Store at room temperature in a tightly sealed container.
- Protect from contamination and unnecessary environmental exposure.
- Use standard laboratory handling practices.
- Refer to the Safety Data Sheet (SDS) before use.
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Frequently Asked Questions
1. What is isotactic polypropylene used for?
It is commonly used in polymer research, material testing, thermoplastic formulation studies, and comparative evaluation of polypropylene materials.
2. What is the molecular weight of this polypropylene?
The current product specifications list an approximate molecular weight of ~220,000.
3. What does isotactic mean?
Isotactic polypropylene has a stereoregular polymer structure, which contributes to crystallinity and thermoplastic material performance.
4. What solvents is this product soluble in?
The product is listed as soluble in chlorinated hydrocarbons, aromatic hydrocarbons, and isoamyl acetate. Compatibility should be evaluated under the intended test conditions.
5. How should this product be stored?
Store at room temperature in a tightly sealed container and follow standard laboratory handling practices. Refer to the SDS for complete safety guidance.
Safety & Documentation
Exercise normal care when handling this material. Refer to the Safety Data Sheet (SDS) for hazard information, recommended PPE, and safe handling guidance.
