Petroleum Jelly (Vaseline)
13. June 2020
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Paraffin Wax


Paraffin Wax

Paraffin wax is a white or colorless soft solid derivable from petroleum, which can be processed and achieved in a wide range of physical and chemical properties, using different refining methods. Paraffin waxes are mostly graded according to the oil content, ranging from around 0.5% to above 20%. The change in oil content can lead to different physical and chemical behaviors of paraffin wax.
Paraffin wax is mostly found in two types of Fully refined and Semi-refined, with a typical melting point between about 46 and 68 °C (115 and 154 °F), and a density of around 900 kg/m3. It is insoluble in water, but soluble in ether, benzene, and certain esters. Paraffin is unaffected by most common chemical reagents but burns readily. Its heat of combustion is 42 kJ/g.
Paraffin wax is an excellent electrical insulator, with a resistivity of between 1013- and 1017-ohm meter.

Paraffin wax is also an excellent material for storing heat, with a specific heat capacity of 2.14–2.9 J g−1 K−1 (joules per gram kelvin) and a heat of fusion of 200–220 J g−1. Wax expands considerably when it melts and this allows its use in wax thermostatic element thermostats for industrial, domestic, and, particularly, automobile purposes.

Applications of paraffin wax

Cosmetics, Food industry, Coating, Adhesive and hot melts, heat and electric insulators, Ink, Paper, Tire, Rubber,…