What is BS 4695 - Melting point (cooling curve) of petroleum wax about?
BS 4695 discusses a method for determining of melting point of petroleum wax (cooling curve). Petroleum wax is a soft colourless solid derived from petroleum, coal or oil shale that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms.
BS 4695 specifies a method for the determination of the melting point (cooling curve) of petroleum wax. It is unsuitable for waxes of the petrolatum group, the microcrystalline waxes, or blends of such waxes with paraffin wax or scale wax.
Who is BS 4695 - Melting point (cooling curve) of petroleum wax for?
BS 4695 on the melting point of petroleum wax is useful for:
- Candle manufacturers
- Lubricant manufacturers
- Food packaging sector
- Forensic laboratories
- Quality control personnel
Why should you use BS 4695 - Melting point (cooling curve) of petroleum wax?
The first step in making paraffin wax is to remove the oil (de-oiling or de-waxing) from the slack wax. BS 4695 defines a Melting point (cooling curve) test that is widely used by wax suppliers and consumers. It is particularly applicable 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 the 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 show a plateau. Using BS 4695 you can specify a method for the determination of the melting point (cooling curve) of petroleum wax.
