elaidin reaction

elaidin reaction

[ə′lā·əd·ən rē‚ak·shən]
(analytical chemistry)
A test that differentiates nondrying oils such as olein from semidrying oils and drying oils; nitrous acid converts olein into its solid isomer, while semidrying oils in contact with nitrous acid thicken slowly, and drying oils such as tung oil become hard and resinous.