Standard Test Method for pH of Engine Coolants and Antirusts

Importancia y uso:

4.1 pH is a measure of the hydrogen ion concentration and indicates whether an engine coolant, antirust, or a solution of these compounds is acidic, alkaline, or neutral.

4.2 The pH range includes values from 0 to 14. Values from 0 to 7 represent the acidic half of the scale. Values from 7 to 14 represent the alkaline or basic half of the scale. The pH value 7 is considered neutral, as it is neither acidic nor alkaline.

4.3 pH is sometimes used for production quality control. It is generally desirable that engine coolants have an alkaline pH value.

4.4 pH is not significant from the standpoint of predicting service life. The pH of used engine coolants or antirust solutions is not a dependable indication of either existing effectiveness or remaining life of the solution.

Subcomité:

D15.04

Referida por:

D8565-24, D7640-16R21, D8085-24, D8566-24, D1121-25, D7713-18R23, E1177-23, D7714-11R21, D8034_D8034M-24, D7517-19, D3306-21, D3585-24, D2570-24, D8039-16R23, D2758-25, D4985-10R23, D7388-23, D5752-25, D2847-22, D7518-20

Volúmen:

15.05

Número ICS:

71.100.45 (Refrigerants and antifreezes)

Palabras clave:

antirusts; engine coolants; pH of engine coolants;