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Haemotoxylum Campechianum is the scientific name for bloodwood or logwood. Bloodwood is a species of flowering tree in the legume family, Fabaceae, that is native to Southern Mexico and Central America. Its name, bloodwood, is a very apt one; it is used as a natural source of a range of red and violet dyes. The dyeing process begins with soaking and boiling logwood chips for at least two hours. The chips are then strained before placing the textile/wool into the water. The colour of the dye depends on the pH value of the solution used, so the intensity of the colour obtained can be changed by adding alum or iron. In acidic environments, the dye takes on a reddish colour, and in alkaline environments, it takes on more blueish tones. Bloodwood dye is used for textiles, paper and for pH indicators. It is also an important source of haemotoxylin, a stain that is used in histology for marking animal and plants cells and tissues so that they can be seen more clearly under a microscope. 

Sample ID: 1273


Colour | Dye | Wood

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