Standard Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method

Importancia y uso:

5.1 The total apparent water in engine coolant concentrate as determined by Karl Fischer titrations consists of the following: (1) water present in the original glycol base; (2) water added (for example, inhibitor solutions); (3) water of hydration of inhibitors (for example, Na₂B₄O₇·5H₂O); (4) water formed in the chemical reaction between borate and ethylene glycol, producing boratediol condensate and water; and (5) quantitative interference by the reaction of the reagent with inhibitors such as tetraborate or sodium hydroxide.

Subcomité:

D15.04

Referida por:

D7388-23, D8565-24, D8085-24, D8566-24, D1121-11R20, D7713-18R23, E1177-23, D7515-19R23, D7714-11R21, D8034_D8034M-24, D3306-21, D3585-24, D8039-16R23, E0203-24, D4985-10R23, E0203-24, D7518-20, E0203-24

Volúmen:

15.05

Número ICS:

71.100.45 (Refrigerants and antifreezes)

Palabras clave:

engine coolants; Karl Fischer; water content;