BRAND GMBH + CO KG: Physical properties

Physical properties
Toxicity: non-toxic
Melting point: 60 °C
Flash point: 301 °C
Temperature range (continuous use): -45 °C to +50 °C
Stretching ability: 200%
Elongation at tear: 300%

Gas permeability in 24 hours at 23 °C and 50% relative humidity:
O₂ (oxygen): £ 350cm³/m²
N₂ (nitrogen): £ 105cm³/m²
CO₂ (carbon dioxide): £ 1100cm³/m²

Water vapor permeability in 24 hours at 37 °C and 90% relative humidity: 0.8 g/m² (Vapor pressure from volatile substances may lift PARAFILM®M off the edge of the vessel.)

Physiological properties
PARAFILM®M is free from plasticizers and consists primarily of polyolefins and paraffin waxes. If PARAFILM®M comes into contact with food, the relevant regulations should be observed.

Storage life
3 years without deterioration, if stored between 7 °C and 32 °C and 50% relative humidity.

Chemical resistance
PARAFILM®M is resistant up to 48 hours against many polar substances, e.g. saline solutions, inorganic acids and alkaline solutions. After this period embrittlement may occur.

Effects of 48 hours exposure at 23°C:
Acids:	Hydrochloric acid 36.5%	resistant
	Sulphuric acid 98%	resistant
	Nitric acid 95%	resistant (brown discoloration)
Alkaline solutions:	Sodium hydroxide 22%	resistant
	Ammonia 28%	resistant
Saline solutions:	Sodium chloride 20%	resistant
	Potassium permanganate 5%	resistant (brown discoloration)
	Iodine solution 0.1 mol/l	resistant (brown discoloration)
Organic solvents:	Methyl alcohol	resistant
	Ethyl alcohol	resistant
	Isopropyl alcohol	resistant
	Diethyl ether	not resistant
	Chloroform	not resistant
	Carbon tetrachloride	not resistant
	Benzene	not resistant
	Toluene	not resistant
PARAFILM®M conforms to the general requirements of the FDA (Federal Food, Drug and Cosmetic Act. USA) if used below 55°C.

Titel: Physical properties

Link: http://www.brand.de/en/products/general-lab-products/parafilmr-m/physical-properties/printer.html

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