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Synthetic Dyes

Synthetic dye. In 1856 William Henry Perkin, an English chemist discovered the synthetic dye Mauveine. From this day forward, synthetic dyestuffs began to supplant natural colour — the synthetic-dye manufacturing industry founded by Perkin in 1857.

Natural dyes

Natural dyes. Up to the middle of the 19th century, there were only natural dyes, and most of these were vegetable origin; natural indigo being one of the most critical colours because of natural colouring needs fixation (mordanting) to absorb

AG (Ciba-Geigy)

AG (Ciba-Geigy). Swiss multinational holding company created in 1970 in the merger of two concerns headquartered in Basel-Ciba AG and J.R. Geigy SA.


A mordant is a substance used to set dyes on fabrics or tissue. It is forming coordination with the colour which then attached to the cloth. It used for dyeing of fabrics or intensifying stains in a cell or tissue preparations.

Eco wool

Eco Wool – Sheared from free-range roaming sheep not subjected to toxic flea dipping, and have not been treated with chemicals, dyes, or bleaches.