1. CAS No.：12270-53-0                                                                                                                                                            2. Brown liquid. Adjustable color shade. Highly fastness to sunlight more than grade 5.                                                                                                                     3. Brightening of nylon fibers. Suitable for both exhaustive dyeing and rolling dyeing processes.                                                                                      4. Stable to the bleaching process of peroxides and hypochlorite. 5. Chlorite resistance, stable to seawater hard water,  stable to hard water & acid.