Norm

NEN-ISO 3841:1979 en

Paraffine - Bepaling van het smeltpunt met behulp van de afkoelgrafiek

31,57

Over deze norm

Status Definitief
Aantal pagina's 2
Commissie Vloeibare en gasvormige brandstoffen, smeermiddelen en verwante producten
Gepubliceerd op 01-07-1979
Taal Engels
This International Standard 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. Melting point (cooling curve) is a 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 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 the plateau.

Details

ICS-code 75.140
Nederlandse titel Paraffine - Bepaling van het smeltpunt met behulp van de afkoelgrafiek
Engelse titel Petroleum waxes - Determination of melting point by means of the cooling curve

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