Acid orange iiacid orange ii / acid orange 7 / acid orange /acid orange 2 /acidrange dye100% strengthfactory price low/good application: can be applicable to all kind of natural fibers like wool, cotton and silk as well as to synthetics like polyesters, acrylicand rayon. But they are not substantive to cellulosic fibers. They are also used in paints, inks, plastics and leather. Specification: item result appearance orange powder shade approximate to standard color strength 100 % natioanl standard insolubles 2% max content water (%) 2.8% product name: acid orange ii c.i. Acid orange 7 cas no.633-96-5 c.i. No.15510 molecular weight:350.33 structure: c16h11n2nao4s.