Punto di fusione delle paraffine

ASTM D87

Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
Melting point (cooling curve) is a test that is widely used by wax suppliers and consumers. it is particularly applied to petroleum waxes that are rather highly paraffinic or crystalline in nature. A plateau occurs with specimens containing appreciable amounts of hydrocarbons that crystallize at the same temperature, giving up heat of fusion, thus temporarily retarding the cooling rate. In general, petroleum waxes with large amounts of non-normal hydrocarbons or with amorphous solid forms will not exhibit a plateau.
This test method covers the determination of the melting point (cooling curve) of petroleum wax. It is unsuitable for waxes of the petrolatum group, microcrystalline waxes, or blends of such waxes with paraffin wax or scale wax.

IP 55

Determination of melting point of wax - Cooling curve method
This method describes a procedure for determination of the melting point of petroleum wax (cooling curve). It is unsuitable for waxes of the petrolatum group, the petroleum ceresin group, or to blends of such waxes with paraffin wax or scale.

 

 

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