ASTM D1613 Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer and Related Products
Organic compounds and hydrocarbon mixtures may have acidity resulting from contamination, aging, and improper storage or conditions during manufacture. This acid may lead to problems when using these chemicals as solvents or reactants. This test determines low levels of acidity (less than 0.05%) in organic compounds and hydrocarbon mixtures including alcohols, ketones, ethers, esters and light distillate petroleum fractions.
The sample is placed in an Erlenmeyer flask, solvent and indicator are added and the sample is titrated with sodium hydroxide. The mg of sodium hydroxide per gram of sample is reported.