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|
Clarity |
Clear |
Moisture Barrier |
Excellent |
Oxygen Barrier |
Fair |
Acid Resistance |
Excellent |
Grease & Oil Resistance |
Good |
Maximum Utilization Temperature |
356°F |
Minimum Utilization Temperature |
-32°F |
Stiffness |
Rigid |
Impact Resistant |
Fair to Good |
Heat Resistance |
Good to Excellent |
Cold Resistance |
Good |
Sunlight Resistance |
Poor |
Specific Gravity |
0.83 |
Specific Density |
0.83 |
Tensile Strength |
4000 psi |
Characteristics of PMP - Polymethylpentene Plastics Other Characteristics of PMP:
PMP is a polymer of 4-methylpentene-1, similar to PP, but has an isobutyl group on alternate C atoms. PMP has high transparency, rigidity and resistance to impact and the ability to withstand temperatures of up to 392°F for short periods (347°F continuously). Chemical resistance is comparable to PP but PMP tends to suffer from tension cracks when exposed to ketones or chlorinated solvents. The most important qualities of PMP are its excellent transparency and good mechanical properties. Over time is can be attacked by chlorinated solvents and is susceptible to attack by strong oxidizing agents.
| Acids – Dilute | Excellent |
| Acids – Concentrated | Good-Excellent |
| Alcohols | Excellent |
| Aldehydes | Good |
| Bases | Excellent |
| Esters | Good |
| Ethers | Low |
| Hydrocarbons, Aliphatic | Low |
| Hydrocarbons, Aromatics | Low |
| Hydrocarbons, Halogenated | Poor |
| Ketones | Low |
| Oils, Minerals | Excellent |
| Oil, Vegetable | Good |
PMP for Laboratories:
PMP is conveniently autoclavable, able to be sterilized by gas, dry heat and chemical disinfectant. However, dry heat can reduce mechanical strength. PMP has relatively high heat resistance, making it an excellent choice for laboratory activities that involve use of liquids at higher temperatures. It can withstand acids and alcohols, allowing for a wide range of liquids to be used in conjunction with PMP. Due to its attack-resistant properties and less porous surface, PMP is easy to clean and is a great choice of labware.
Recycling:
Private PMP recycling facilities exist, check your local yellow pages. For more information regarding PMP recycling see the Plastic Container Recycling Page.
To purchase PMP plastic containers please visit:
Lab Supply
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Information
Saturday 20 March, 2010