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Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
NORMA vydaná dňa 1.10.2018
Označenie normy: ASTM D87-09(2018)
Dátum vydania normy: 1.10.2018
Kód tovaru: NS-905719
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
cooling curve, melting point, petroleum wax, wax,, ICS Number Code 75.140 (Waxes, bituminous materials and other petroleum products)
Significance and Use | ||||||||
5.1?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. |
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1. Scope | ||||||||
1.1?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. Note 1:?For additional methods used for testing petroleum
waxes, see Test Method D127
and Test Method D938. Results
may differ, depending on the method used. For pharmaceutical
petrolatum, Test Method D127
usually is used.
1.2?The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||
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