Wool fibre has about 850 micromoles of totally free amino teams per gram of fibre, delivering an extremely large density of cationic dye web-sites. This amino group information is somewhere around 20 times increased than that of nylon (close to 40 μmol/g) and 5 instances bigger than silk (about 170 μmol/g).The Sulphur dyes consist of Sulphur link

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