Conbasic Brown A

Name	BismarkbrownG
Synonyms	BismarkbrownG BISMARK GROWN G Arlabas Brown R Conbasic Brown A Bismarck Brown YC Basazol Brown 43L Dycosbasic Brown G Nippon Kagaku Bismarck Brown B
CAS	8005-77-4

Molecular Formula	C18H18N8
Molar Mass	346.38912
Physical and Chemical Properties	Brown powder. Easily soluble in water is yellow and brown, slightly soluble in ethanol and glycol ether, insoluble in acetone, benzene, carbon tetrachloride. The dye is brown in concentrated sulfuric acid and turns reddish brown after dilution. In concentrated nitric acid, it turns yellow in an orange solution. The addition of hydrochloric acid to the aqueous solution has no change, and the addition of 10% sodium hydroxide produces orange precipitate.

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	alkaline brown can be used for dyeing cotton, wool, silk, viscose fiber and acrylic fiber, but the fastness is slightly poor, and the sun fastness is grade 1-2. It can also be used for dyeing leather, paper, bamboo and wood and for making lakes.
production method	using m-phenylenediamine as the main raw material, first double nitridate 1mol m-phenylenediamine with NaNO2 and HCl at low temperature to obtain m-phenylenediamine diazonium salt, which is then coupled with 2mol m-phenylenediamine, and then salted out, filtered and dried to obtain the finished product..

Last Update：2024-04-09 19:05:32

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CAS: 8005-77-4
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185

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