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Napthol is a cold water dye, meaning that it can mix well at any temperature, not like fibre reactive dyes which can only mix at a certain temperature. Napthol suits batik painting very well since it would not melt the wax used as resist for setting the dye. Napthol having certain hazardous chemical substances cannot be safely used for dyeing at home but only utilized for commercial purposes. Napthol dyes are prepared by mixing diazo salt and napthol in a certain proportion. The advantage of such dye is that it will not spread onto adjacent areas or ‘bleed’. Hence contrast colours could be used side by side safely. The resulting colour obtained is from the insoluble particle lodged deeply within the fabric fibres. Napthol dyes are comparatively cheaper than fibre reactive dyes.