Acid black ATT Strength: 100% Use: usually used in dyeing leather, wool, fur, silk, paper, wood, textile, etc Product name: Acid Black ATT Index No.: Acid Black ATT Appearance: Dry Mixture: Red Brown with Metal Luster Wet Mixture: Black Even Powder Strength: 100% Moisture %:≤4.0 Water Insoluble Matter %:5≤.0 Fineness (Residue On 80mesh Screen) %:≤1.0 Use: usually used in dyeing leather, wool, fur, silk, paper, wood, textile, etc