Paper/leather dyes/Direct black EX /Direct black 38

      Product Description    Direct Black EX / leather dyes Name:                     direct black 38 (C.I. 30235)  Synonyms:            C.I. direct black 38 (30325). direct black EX,  direct black GX, CAS RN.:               1937-37-7 EINECS:                 217-710-3 Molecular Weight:   Molecular Formula: C34H25N9O 7 Na2S2 Density:                   1.606g/cm3 Physical Appearance   black powder 
Commercial Name     Direct black EX Direct black 38
Color Index Number    30235
Concentration              100% 
 Shade                       similar to standard Fastness Properties  Light 4 Soaping 3-4 Water 4-5 Perspiration 4 Rubbing 4 dry 1 wet Acid resistance 4 alkali resistance 4 Ironing 2           Company Information   We, Hebei Youhao Chemical Co,. Ltd, located in Hebei China and close to Beijing and Tianjin port. We specialize in dealing with dyestuff for 10 years. Our main products are direct dyes, acid dyes, basic dyes, sulphur dyes. Our products widely used in paper ,leather,wool,textile,wood,fertilizer ,caddice,soap,and so on . Furthermore the quality of our products meet ISO 2008 standard.