Abstract
Thiourea dioxide was applied as reducing agent during the dyeing of cellulosic fibres with eight commercial sulphur dyes. The same dyes were also applied frow dyebaths containing sodium sulphide. It was found that the intensity and fastness properties of the dyeings by both methods were similar, although in some cases slight differences in shade were observed. Analysis of the exhausted dyebaths indicates that thiourea dioxide may be considered as a more environmental friendly substitute for sodium sulphide during the application of sulphur dyes.
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