Acid Blue 93 CAS #28983-56-4

Acid Blue 93, also known as methyl blue, acid ink blue, etc., is a shiny red-brown powder with the following chemical properties:
It is easily soluble in cold and hot water, and the solution is blue;
It is soluble in alcohol and is green-blue;
It is red-brown when in contact with concentrated sulfuric acid, and blue-purple after dilution.
Acid Blue 93 is mainly used to make pure blue and blue-black inks, and can also be used to prepare lakes for blue pad ink. In addition, it can also be used for dyeing silk, cotton and leather and biological coloring, and can also be used as an indicator.