Min. Order Reference FOB Price
100 kg US$3.68-4.18 / kg
Product Description
C.I.Direct Blue 2, C.I.22590, CAS 2429-73-4,830.71,C32H21N6Na3O11S3,Direct Blue BH,Direct Diazo BlackBH Molecular Formula:C32H21N6Na3O11S3 Molecular Weight: 830.71 CAS Registry Number:2429-73-4 Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions ...