... and yellow diluted, and then transformed into blue and purple. Cotton fiber is 1-2 level dyeing fastness, light fastness was ... : 1. Basic violet 5BN and can be used for dyeing silk, cotton, hemp, acrylic fibers, but the fastness is poor, so the ... Danzi and so on, can also be used for dyeing cotton, acrylic, silk, paper, leather, grass products, but also can manufacture Lake ...