Bismarck Brown R
For yellow brown is soluble in water, soluble in ethanol and soluble fiber element, slightly soluble in acetone, insoluble in benzene. The strong sulfuric acid for brown, diluted into a red light brown; In nitric acid solution for purple, to brown; In strong hydrochloric acid for purple solution (don’t). The dye solution to join strong hydrochloric acid for yellow brown; Add 10% sodium hydroxide solution into orange.
Application: Mainly used for silk, wool fabric dyeing, also used in leather and paper color.
C.I. Name: Basic Brown 4
C.I. Number: 21010
CAS Number: 8005-78-5
Molecular Weight: 388.47
Molecular Formula: C21 H24 N8
Chemical Structure:
Packing: 25KGs pp Drum
