Determination of Mononitrothiophene and Dinitrothiophene in Nitrobenzene

Abstract

scribed procedure a dilution of 2500 is made, the interference from material dissolved from the resin bed is insignificant.This procedure is not absolute, but must be calibrated in terms of another method. On the other hand, it is extremely rapid compared with existing methods. A determination can be made in 20 minutes, while the minimum time for the Samuelson-Gártner method is about 2 hours.

Ultraviolet Spectrophotometry

“…Useful for identification and analysis are tables of maxima wave lengths and molar absorptivities of a-and /3-monosubstituted derivatives of thiophene (5). Monoand dinitrothiophene may be determined in nitrobenzene (80). Parathion and p-nitrophenol mixtures are analyzed by spectrophotometric examination before and after hydrolysis (64).…”