p-nitroaniline as a colorimetric reagent for sulphur dioxide.
The merits of the nitroanilines as an alternative to p-rosaniline and fuchsine in the colorimetric determination of sulphur dioxide and sulphites have been investigated. p-Nitroaniline was found to be a stable, well-defined reagent, with which sulphur dioxide can be determined to a high level of precision, the sensitivity being of the same order of magnitude as for p-rosaniline.
Bethge
P O
PO
Swedish Forest Products Research Laboratory and Central Laboratory of the Swedish Cellulose Industry, Stockholm 11728, Sweden.
Carlson
M
M