Good Quality Direct Fast Blue B2RL ( Direct Blue 71 )

[ Molecular Formula ] : C40H23N7Na4O13S4         

[ Colour Index ] : C.I. Direct Blue 71

[Cas No]. 4399-55-7

[Molecular Weight]: 1029.86

[H.S. Code]: 3204140000

[Appearance]: Dark Blue Powder

[Strength]:100% 150%,175%

[Shade]: To the similar standard of the factory

[Moisture%]:0.9 Max

[Properties]:It is very soluble in water and alcohol