Mordant Black 13

What are the applications of Application

Alizarin Blue Black B is a stain also known as Mordant Black 13

Preparation

(a)1,2,4-Trihydroxyanthracene-9,10-dione?in the presence of boric acid condensation of aniline??, sulfonation, and then into sodium salt; (b)2-Bromo-1,4-dihydroxyanthracene-9,10-dione?or?2-Chloro-1,4-dihydroxyanthracene-9,10-dione and aniline condensation, then sulfonation.

Properties and Applications

blue gray to black (chromium). Black powder. In the water solubility for 100 g/l (80 ℃), soluble in Cellosolve, slightly soluble in Acetone, ethanol, 2 – Chlorophenol and Pyridine , insoluble in benzene, Carbon tetrachloride, Chloroform, Toluene and Stout solvent. In concentrated sulfuric acid to purple, purple precipitation after dilution. Dyeing encounter copper ion color constant, encounter iron ion color red. Mainly used for wool top, wool and wool fabric dyeing, especially suitable for carpet and wool dyeing. Also can be used for silk, nylon and wool and a variety of fiber blended fabric dyeing, and can be in acetic acid chromium pretreatment of the blended fabric on direct printing, but also used for fur and biological dyeing.