organic pigment violet 23 Product Name: PERMANENT VIOLET BL (PIGMENT VIOLET 23) Code: PV23-BL Countertype: CLARIANT,BASF,CIBA;Violet BLN,Violet GT C.I.NO.: 51319 CAS NO.: 6358-30-1 EINECS NO.: 228-767-9 Molecular Weight:589.50 Chemical Formula: C34H22Cl2N4O2 highly recommend our organic pigment for plastic/masterbatch,painting,printng ink,like pigment violet 3, 23 , red 53:1 57:1 ,48:2,122,170,254 yellow 12.13.14 ,74,83 also orange 13,16,34 and so on From :Feixia Lou(Fiona)