Standard Test Methods for Saponification Number of Petroleum Products

Importancia y uso:

5.1 Petroleum products can contain additives that react with alkali to form metal soaps. Fats are examples of such additives. Also, certain used engine oils, especially from turbine or internal combustion engines, can contain chemicals that will similarly react with alkali. The saponification number expresses the amount of base that will react with 1 g of sample when heated in a specific manner. This then gives an estimation of the amount of acid present in the sample, that is, any free acid originally present plus any combined (for example, in esters) that have been converted to metal soaps during the heating procedure.

5.2 Saponification numbers are also used in setting product specifications for lubricants and additives.

Subcomité:

D02.06

Referida por:

D6710-21, D4056-21

Volúmen:

05.01

Número ICS:

75.080 (Petroleum products in general)

Palabras clave:

additives; lubricating oils; potentiometric titration; saponification number ;