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PMP Info

Recycling Code 7, OtherCharacteristics of PMP - Polymethylpentene Plastics


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


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.

Chemical Resistance:
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

Other Plastic Container Material
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PFA Plastic Containers
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Polycarbonate Plastic Labware

 

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Saturday 20 March, 2010