Basic Blue 9 / Methylene Blue / Methylene Blue BB / Methyl Blue

Basic blue 9, is also known as Methylene Blue, Methylene blue BB, or methyl
blue. It is a golden red flash or flash golden bronze powder. Soluble in water,
slightly soluble in alcohol, blue. Case of concentrated sulfuric acid is yellow
green, blue diluted. In concentrated nitric acid in the Gray-green, added
sodium hydroxide solution is purple and dark purple precipitate, add
hydrochloric acid unchanged.


C.I.: 52015

CAS NO. : 61-73-4

Molecular Formula: C16H18ClN3S

Molecular Weight: 319.858

Strength: 100%

Packing: Packed in 25kgs iron drums, plastic bags.

Application Instructions:
Basic blue 9 is used for silk, wool dyeing, the light fastness is poor;
When used as tannin mordant dyeing for cotton dyeing, light fastness is 3;
Basic blue 9 or methyl blue, was previously used for the direct printing of
cotton, but now, it is rarely used in this way;
Other uses including pigment for the paper, bamboo, wood color, for the
manufacture of ink and color lake pigments and biological, bacteriological
stain;
Also used as solvent dyes.

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