Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
Automaticky přeložený název:
Standardní zkušební metoda pro bod tání ropného vosku ( chladicí křivka )
NORMA vydána dne 1.2.2007
Označení normy: ASTM D87-07
Poznámka: NEPLATNÁ
Datum vydání normy: 1.2.2007
Kód zboží: NS-39545
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: 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 | ||||||||
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 show the plateau. |
||||||||
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 1For additional methods used for testing petroleum waxes, see Test Method D 127 and Test Method D 938. Results may differ, depending on the method used. For pharmaceutical petrolatum, Test Method D 127 usually is used. <>1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. |
||||||||
2. Referenced Documents | ||||||||
|
Poslední aktualizace: 16.09.2024 (Počet položek: 2 433 731)
© Copyright 2024 NORMSERVIS s.r.o.