ASTM D1093-23 pdf free download – Standard Test Method For Acidity Of Hydrocarbon Liquids And Their Distillation Residues.
This testing procedure is designed for the qualitative assessment of the acidity in hydrocarbon liquids and their distillation by-products. (Caution: Many hydrocarbon liquids are highly flammable. Inhaling them can be harmful. Vapors of hydrocarbon liquids can ignite suddenly and cause a fireball.)
To assess the basicity of a hydrocarbon liquid, follow the procedures outlined in sections 9.2 or 9.3, but replace the methyl orange indicator with 3 drops of phenolphthalein indicator solution. A pink or red hue in the aqueous solution upon the addition of phenolphthalein signifies basicity.
The findings from this testing method are qualitative in nature. Nevertheless, when preparing reagents and during the procedure, SI units are to be considered the standard.
