Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration

Importancia y uso:

5.1 New and used petroleum products, biodiesel, and blends of biodiesel may contain acidic constituents that are present as additives or as degradation products formed during service, such as oxidation products. The relative amount of these materials can be determined by titrating with bases. The acid number is a measure of this amount of acidic substance in the oil, always under the conditions of the test. The acid number is used as a guide in the quality control of lubricating oil formulations. It is also sometimes used as a measure of lubricant degradation in service. Any condemning limits must be empirically established.

5.2 Since a variety of oxidation products contribute to the acid number and the organic acids vary widely in corrosion properties, the test method cannot be used to predict corrosiveness of oil or biodiesel and blends under service conditions. No general correlation is known between acid number and the corrosive tendency of biodiesel and blends or oils toward metals.

Subcomité:

D02.06

Referida por:

F0715-07R23, D1534-95R17, D3242-23, D3242-23, D7666-12R19, D4057-22, D0396-24, D4871-11R22, D6751-24, D8111-23A, D8048-24, D6439-23, D7665-22, D7414-22, D0974-22, E0287-02R19, D6469-24, D8045-17R23, D8074-23, D6710-21, D6224-23, D4636-17, E0287-02R19, D5222-23, D3339-21, D8291-24, D7973-19, D8029-23, D5282-05R20, D4636-17, D7156-24, D8128-22, D8324-21, D4378-24, D4304-22, D4293-22, D4057-22, D6469-24, D5277-22, D6751-24, D4739-23, D1934-20, D1240-24, D8181-19, D5846-24, D0974-22, D6074-15R22, D0974-22, D4739-23, D7549-24, D7098-21, D2619-21, D8031-16R24, D4310-22A, E3146-24, D4652-20, D5704-24, D6514-03R19E01, D4057-22, D4742-23, D6158-23, D7826-24, D7720-21, D7467-23, D7752-18, D8579-24, D7467-23, D7752-18, D8323-24, D7414-22, D5372-20, D6823-24, D7422-23, D8506-23, D5770-23, D6751-24, D2440-13R21, D3487-24, D7414-22, D3242-23, D8350-24, D7484-23A, D3394-16R22, D4739-23, D0943-20, D8279-24, D7155-20, D7155-20, D5967-21, D4174-23, D6923-23, D5966-22, D7155-20, D6750-23, D4057-22, D0117-22, D6681-23, D6618-23, D7583-16R23, D7468-22

Volúmen:

05.01

Número ICS:

75.080 (Petroleum products in general)

Palabras clave:

acid number; B5; B10; B20; B100; biodiesel; biodiesel blend; lubricants; petroleum products; potentiometric; strong acid number; titration;