isotactic polypropylene
polymerIsotactic polypropylene (iPP) is a semicrystalline thermoplastic polymer characterized by regular, ordered molecular chain structure that provides superior stiffness and crystallinity compared to atactic variants. It is widely used in automotive components, consumer packaging, medical devices, and appliances where a balance of rigidity, chemical resistance, and cost-effectiveness is required. Engineers favor iPP over lower-grade polypropylene grades and competing polymers when moderate temperature resistance and good fatigue performance are needed without the expense of engineering plastics like nylon or PBT.
automotive interior trimfood packaging and containersmedical device housingsinjection-molded consumer goodschemical-resistant pipingappliance components
Compliance & Regulations
?UL 94?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | — | - | — | — | |
Hardness (Vickers)(HV) | — | HV | — | — | |
Ultimate Tensile Strength(σUTS) | — | Pa | — | — | |
Young's Modulus(E) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | K | — | — | |
Melting Point / Solidus(Tm) | — | K | — | — | |
Maximum Service Temperature(Tmax) | — | K | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | — | - | — | — |
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.