quercitron bark is an excellent dye-stuff employed by wool-dyers for the production of bright orange and yellow colours.
quercitron, which should be brought slowly to the boil and boiled for a few minutes only.
If a dead black is wanted, add some decoction of quercitron or turmeric to the bath.
quercitron is the inner bark of a species of oak (Quercus tinctoria) found in the United States.
In America quercitron is used for tanning, and in Europe for dyeing only.
quercitron, a yellow dye obtained from the bark of a North American oak.
The American quercitron bark gives us also a useful additional yellow dye.
In winter they are passed through a slightly chalky water, then washed at the wheel, and dyed in quercitron or weld.
A very minute proportion of quercetin, a principle yielded by quercitron bark, has been obtained from catechu.
Some of the latter is so deficient as to afford colours nearly as fugitive as those of Brazil wood and quercitron.