Product Description
PARAFILM Roll PM-996 4 Inch x 125 FT. (1 Roll), USA
A flexible sealing film comprising a proprietary blend of waxes and polyolefins on a paper release liner
Features
Parafilm “M” is highly insensitive to water, moisture loss, and moisture absorption, yet is permeable to oxygen and carbon dioxide.
Parafilm “M” stretches more than 350% of its original length and is self-sealing, allowing it to cling around irregular shapes and surfaces.
These unique properties make it ideal for protecting the contents of test tubes, flasks, beakers, and Petri dishes as well as an overwrap to further secure stoppers, lids, and caps.
Technical Data
Properties Values Units Test Method
Thickness 127 ?m ASTM D645
Density 0.922 g/cm3 Amcor Internal
Elongation at Break >350 % ASTM D882
Water Vapor Transmission Rate 1 g/(m2? d) @ 38 ?C; 90% RH ASTM F1249
Oxygen Transmission Rate 300 cm3/(m2? d) @ 23 ?C; 0% RH ASTM D3985
Carbon Dioxide Transmission Rate 1200 cm3/(m2? d) @ 23 ?C; 0% RH ASTM F2476
Softening Point 54 C Amcor Internal
Melting Point 100 C Amcor Internal
Effects of Common Reagents
Parafilm M is resistant to many polar substances for up to 48 hours. After this period, some brittleness may occur.
It is not recommended for use with chlorinated or non-polar aliphatic or aromatic solvents.
Reagent Concentration 24 h exposure at 23
Acids
Hydrochloric acid 12 N No apparent effect
Sulfuric acid 36 N No apparent effect
Nitric acid 16 N Resistant (some discoloration)
Alkalis
Sodium hydroxide 1.8 N; 22 wt-% NaOH No apparent effect
Ammonium hydroxide 14.5 N; 28 wt-% NH3 No apparent effect
Organics
Methanol No apparent effect
Ethanol 95 % (v/v) No apparent effect
Isopropanol 99 % (v/v) No apparent effect
Other
Saline solution 20 wt-% NaCl No apparent effect
Potassium permanganate 5 wt-% Resistant (some discoloration)
Iodine solution 0.1 N (KI+I2) Resistant (some discoloration)