Specifies an acid washing test. Gives some indication of the degree of refining but does not give a precise measure of the amount of unsaturated compounds present as different unsaturated compounds produce different colourations with sulphuric acid. Shaking together of equal volumes of the sample and 95 % (m/m) sulphuric acid. Comparison of the colour of the acid layer with that of standard matching solutions.
Дата регистрации:
01.08.79
Дата введения:
01.07.79
Дата отмены:
30.05.02
Код КГС:
Л29
Код ОКСТУ:
2410;2409
Код ОКС(МКС):
71.080.15
Код ОКП:
2410;2409
Нормативные ссылки:
NF T67-103(1968/AFNOR)
Ключевые слова:
AROMATIC HYDROCARBONS CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING COLORIMETRIC ANALYSIS COLORIMETRY HYDROCARBONS REPRODUCIBILITY SULPHURIC COLORATION NUMBER WASHING TESTS CHEMICAL ANALYSIS AND TESTIN