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PARAFILM stretches up to 200% and clings even around irregular shapes and surfaces. The sealing film is free of plasticizers and consists primarily of polyolefins and paraffin waxes. PARAFILM M is resistant up to 48 hours against many polar substances, eg saline solutions, inorganic acids and alkaline solutions.Protect the integrity of research applications with a tight moisture-barrier that holds a strong seal and doesn't release from glassware, despite off-gassingReduce the risk of tampered data with a covering that is odorless, colorless and semi-transparentPrevents moisture and volume loss due to material composition and tight sealFlexible and self-sealing material allows it to cling around irregular shapes and surfacesStretches more than 200% of original lengthResistant up to 48 hours against many polar substances such as saline solutions, inorganic acids and alkaline solutionsPermeabilityOxygen: (ASTM 1927-98) 150 cc/m虏 d at 23C and 50% RHCarbon Dioxide: (Modulated IR Method) 1200 cc/m虏 d at 23C and 0% RHWater Vapor: (ASTM F1249-01)Flat: 1 g/m虏 d at 38C and 90% RHCreased: 1 g/m虏 d at 38C and 90% RHEffects of Common ReagentsPotassium Permanganate 5%: No apparent effect except permanent dark brown coloration in 18 hours0.1%: Same as 5% except slightly less colorIodine solution (0.1N)No effect except staining brown in 18 hoursEthyl Alcohol (95%)No apparent effect except some face whitening in 24 hoursNo apparent effect in 24 hours:Hydrochloric Acid conc. (12N) dil. (5N)Sulphuric Acid conc. (36N) dil. (5N)Nitric Acid conc. (16N) dil. (5N)Sodium Hydroxide conc. (22%)Ammonium Hydroxide conc. (28% NH
3)Salt (NaCl) solution (20%)Isopropyl Alcohol (99%)Not recommended for use with chlorinated, non-polar aliphatic and aromatic solventsFilm becomes soft and sticky at about 130 to 150F (54 to 66C)
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