|
V. M. Ivanov, M. G. Tsepkov, V. N. Figurovskaya
Optical, tsvetometric and
acid-basic characteristics of methyl orange
Abstract
Are investigated optical and tsvetometric characteristics
of 4-dimethylaminoazobenzen-4¢-sulphoacid (methyl orange, MO) in water solutions at pH 2–9. The equations calibration
of the diagrams of dependence tsvetometric of functions from concentration are
received and are calculated molare factors tsvetometric of functions. Spectrophotometric
the method determines constants dissociation MO at ionic to force 0.01–0.2, they are given to ionic
force 0 and are compared to the literary data. The advantages tsvetometry
before spectrophotometry are shown at determination of concentration MO.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
