Direct Blue 151 

Product Name: Direct Blue 151(24175) Other Name: Direct Copper Blue 2B CAS No.:110735-25-6 MF: C34H25N5O10S2.2Na MW: 773.708 Origin: China Type: Direct Dyes Usage: Just like Direct Blue 71, it is used for dyeing fiber, silk, cotton, leatherand paper. Acid dyes and direct dyes are both for dying and can be used in many fields. Qingdao Langke Co., Ltd is one of the main supplier of pigment,dyestuff  and their intermediates. In the past 10 years, we have sold the products to more than 20 countries. Either acid dyes or direct dyes, or even pigment, they all gained good reputation. To choose us as the partner, you will not be disappointed.