Direct Black 38 

Product Name: Direct Black 38 (30235) Other Name: Direct BLack EX CAS No.:1937-37-7 MF: C34H28N9NaO7S2 MW: 761.76 Place of Origin: China Type:Direct Dye Usage:Used for dyeing cotton, linen, viscose, leather,wood,and inks. 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 disapointed C34H28N9NaO7S2