PARAFFIN WAX 58º-60ºc
Paraffin wax refers to a white or colourless soft solid that is used as a lubricant and for other applications. It is derived from petroleum and consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is solid at room temperature and begins to melt above approximately 37 °C (99 °F); its boiling point is >370 deg C . In chemistry, paraffin is used synonymously with "alkane", indicating hydrocarbons with the general formula CnH2n+2. The name is derived from Latin parum ("barely") + affinis, meaning "lacking affinity or "lacking reactivity" indicating paraffin's unreactive nature.
Paraffin wax is mostly found as a white, odorless, tasteless, waxy solid, with a typical melting point between about 46 and 68 °C (115 and 154 °F), and having 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.
Paraffin wax is an excellent electrical insulator, with an electrical resistivity of between 1013 and 1017 ohm meter. This is better than nearly all other materials except some plastics (notably Teflon). It is an effective neutron moderator and was used in James Chadwick's 1932 experiment to identify neutron.
Paraffin wax is an excellent material to store heat, having a specific heat capacity of 2.14–2.9 J g−1 K−1 (Jouleper gram Kelvin) and a heat of fusion of 200–220 J g−1.This property is exploited in modified drywall for home building material: a certain type (with the right melting point) of wax is infused in the drywall during manufacture so that, when installed, it melts during the day, absorbing heat, and solidifies again at night, releasing the heat. Paraffin wax phase change cooling coupled with retractable radiators was used to cool the electronics of the Lunar Rovar.Wax expands considerably when it melts and this allows its use in wax thermostatic element thermostat for industrial, domestic and, particularly, automobile purposes.