SAPPAN WOOD or East Indian red wood is a natural dye yielding medicinal plant. It is botanically known as Caesalpinia Sappan and it is commonly known as Brazil/Sapan wood or Bakam/patang in hindi.
It grows well in all kinds of soil and lush growth is obtained in red soil. The pods contain 40 per cent tannin and can be used in the place of Sumac. The seeds on extraction with petroleum ether yield an orange coloured fixed oil.
The important part of this plant is the heartwood that contains water-soluble dyes such as brazilian, protosappanins, sappan chalcone and haematoxylin.
It will produce lovely warm reds when dyed at a 2-5% WOF and deep crimson reds when dyed at 5-10%.