抄録
Authors could make clear that the total unsaturation of α, β-unsaturated organic acids (crotonic acid, acrylic acid, methacrylic acid and maleic acid) can be estimated quickly by the method using aqueous solution of bromine chloride prepared by acidifying the aqueous solution of potassium bromate and potassium bromide with hydrochloric acid.
The iodine value of fatty materials containing isolated double bonds (oleic acid, methyl erucinate, olive oil, rape seed oil and sesame oil), and water insoluble acid samples such as cinnamic acid containing α, β-ethylene linkage were measured by the method using the solution of bromine chroride in glacial acetic acid. The results obtained in the analysis by the method were essentially similar to that of the Wijs method, except the results in the case of cinnamic acid. There is a remarkable agreement between the estimated iodine value of cinnamic acid and its theoretical value.
