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هنر::
رنگ روناس
The main coloring constituent of European madder Rubia tinctorum is alizarin.
As with indigo, the use of natural madder powder started declining after the manufacture of synthetic alizarin by the BASF.
The most famous natural dye in this category is alizarin obtained from European madder (Rubia tinctorum).
Fig. 2 Alizarin (1, 2- OH
Alizarin 75330 Natural red 6, 8, 9, 10, 11, 12 Madder, chayroot
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