Бутадиен технический. Определение содержания активного третичного бутил-катехина(ТВС) [4-(1,1-диметилэтил)-1,2-диоксибензол]. Метод высокоэффективной жидкостной хроматографии
Название (англ.):
Butadiene for industrial use; Determination of active tert-butyl-catechol (TBC) (4-(1,1- dimethylethyl)-1,2-benzenediol); High performance liquid chromatographic method
Описание (англ.):
The active TBC in a test portion is extracted by mixing with a solution containing m-nitrophpenol (as the internal standard) and evaporating the butadiene. The TBC and m-nitrophenol areseparated by high-performance liquid chromatography and detected by UV: The peak areas or peak heights are measured and the TBC content is determined by using a calibration graph. The polymerization inhibitor TBC can also be determined by a spectrometric method (ISO 6684) but that method is not able to differentiate between the active inhibitor and its oxidized, inactive form. The present method specifically measures the concentration of the active form of TBC. The method is applicable to butadiene having TBC contents in the range 0 to 250 mg/kg.
Дата регистрации:
16.11.88
Дата введения:
01.07.86
Дата отмены:
30.05.02
Код КГС:
Л29
Код ОКСТУ:
2411;2409
Код ОКС(МКС):
71.080.10
Код ОКП:
2411;2409
Нормативные ссылки:
NF ISO 8176-1987, EQV*NF T20-814(1987/AFNOR), EQV
Ключевые слова:
BUTADIENE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICAL COMPOUNDS CHROMATOGRAPHIC ANALYSIS CHROMATOGRAPHY CONNECTIONS DETERMINATION OF CONTENT INDUSTRIAL PRODUCTS LIQUID CHROMATOGRAPHY TERT-BUTYL-CATECHOL CHEMICAL ANALYSIS AND TESTIN