Abstract
-This report describes about an improvement of the method hitherto published. The 80% sulphuric acid method for determination of the olefinic content in. gasoline was pursued, and its method was established concretely.
It was found that limit content of removing olefinic hydrocarbons by this method was 5%. Then entolefinic oil was nitrated to nitro-aromatic hydrocarbons with a mixture of nitric and sulphuric acid. And it was received from the experimental results that quan-tities of the nitrating mixture and 91% sulphuric acid, which could remove nitro-aroma-tic hydrocarbons in nitrated oil, were effected on the aromatic content in gasoline. Thus the method was somewhat improved.
