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Madder

Madder has been used since ancient times as a red dye. The chemical name for the pigment is alizarin.

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... a total area of 7.7 km² (3.0 mi²). 7.5 km² (2.9 mi²) of it is land and 0.2 km² (0.1 mi²) of it is water. The total area is 2.35% water. ...