The following impurities were identified in bis-ethylbenzenechromium produced according to the Friedel-Crafts reaction: benzene, toluene, ethylbenzene, o-ethyltoluene, o-diethylbenzene, triethylbenzene, dibenzenechromium, ditoluenechromium, benzeneethylbenzenechromium, ethylbenzene-o-diethylbenzene-chromium, bis-diethylbenzenechromium, and bis-triethylbenzenechromium.
A procedure of gas chromatographic analysis of bis-ethylbenzenechromium was developed. The sensitivity of the analysis is 1·10−2-5·10−3 mole %.
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Devyatykh, G.G., Umilin, V.A., Zverev, Y.V. et al. Composition of impurities in bis-ethylbenzene chromium produced according to the Friedel-Crafts method. Russ Chem Bull 18, 207–209 (1969). https://doi.org/10.1007/BF00905519
- Chromatographic Analysis