Basic Blue 9 CAS NO.61-73-4

We are the manufacturers of Methylene Blue Zinc free which passes in IP/BP/EP/USP norms. The specifications are as under : SPECIFICATION USP GRADE …

We are the manufacturers of Methylene Blue Zinc free which passes in IP/BP/EP/USP norms. The specifications are as under : SPECIFICATION USP GRADE 1.Product :METHYLENE BLUE 2.C.I No. :52015 3.Appearance : Dark Green Crystalline Powder 4.Assay (as is basis) :80 % - 85% 5.Assay (on dry basis) :98% -101% 6.Loss on drying :10% -20% 7.Solubility :Clear Blue Solution 8.Ash content :1.2% Max 9.Residual Solvent :Nil 10.Aluminium :< 100 ppm Max 11.Cadmium :< 1ppm Max 12.Chromium :< 10ppm Max 13.Copper :< 50ppm Max 14.Tin :< 10 ppm Max 15.Iron :< 100ppm Max 16.Mangenese :< 10ppm Max 17.Mercury :Nil 18.Molybdenum :<10ppm Max 19.Nickel :<10ppm Max 20.Lead :<10ppm Max 21.Zinc :<100ppm Max 22.Absorptivity1%,1cm,at??max.663.0nm:2200to2750