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method for the preparation of azo dyes pyrazoluim -, method for preparing 3 (5) - phenyl - 4 - nitro - 5 (3) amino pyrazole,method for dyeing of fabrics and fibers as obtained with these dyes and dyed products.
method for the preparation of azo dyes pyrazoluim -, method for preparing 3 (5) - phenyl - 4 - nitro - 5 (3) amino pyrazole,method for dyeing of fabrics and fibers as obtained with these dyes and dyed products.
