In this study, iron chloride solution ١٠٪ was used as absorbance matter
which absorbs all dyes and the organic substances during its precipitation .
The accumulation of these wastes in nature is considered to be a serious source
of pollution and h
ealth hazard. We determined the optimal pH and the optimal
dose of a minimom number of the reagent used as well as the water of
dyehouse baths, and we compared the difference between using iron chloride
and aluminium sulfate .We adopted the experimental observation in measuring
the results and the strength of absorption within the spectrofield in a wave
length of ٣٥٠ – ٧٥٠ nanometer .
