Direct Fast Black G, Direct Black 19 for Textile, Paper Use

Product Name: Direct Black 19
C.I. No.: 35255
CAS No.: 6428-31-5
Molecular Formula: C34H27N13Na2O7S2
Molecular Weight: 839.77
Relative Name:
Direct Light Fastness Black L-3BQ,Direct Light Fastness Black,Direct Light Fastness G
Direct Black 19, disodium salt (8CI);Artificial SilkBlack G;Artificial Silk Black GN;Artificial Silk Black GR;Bali Viscose Black G;BencidalFast Black G;Benzanil Fast Black G;Benzo Fast Black G;Benzoform BlackRRA-CF;;ChromeLeather Black GNA;Columbia Fast Black G;Daiwa Black 320H;Diamine Fast Black B;Direct Black 19;Direct Black L 3BG;Direct Fast BlackGU;Direct Fast Black SA;Direct Rayon Black KSG;Formal Fast Black 2B;Hispamin Fast Black CG;Kayarus Black G;Kayarus Black G Conc.;Orient Water Black 7;Phenamine Viscose Black RR;Pyrazol Fast Black GS;Rayon Black G;Rayon BlackGSN;Solar Black G;Sumilight Black G;Tertrodirect Black V;Tetrazo Deep Black GC Extra;Viscose Black GNA;Viscose Black J;Viscose Black N;Viscose Black NG;Vondacel Black VN;Water Black 100L;WaterBlack 108L;Water Black P 200;
 
Direct Direct Black 19 Physical Properties and light fastness, solubility.  
Direct Direct Black 19 Properties:
green and black. Black powder. Soluble in water for green light black, solubility of 100 g/L (80 ºC), slightly soluble in acetone. The strong  in the green light for black, dilute red after black precipitation;. Dyes and microstructure of10% red; Add thick solution for green light blue. Copper ions in dyeing color shade the green, iron ion a slight change in color.
 
Applications:
Used in viscose of dyeing and printing. In the cotton knitwear, blankets, flannelette, silk, viscose, silk that the fabric, wool/viscose fiber blend fabrics can be used. Can also be used in leather, paper and electrochemical aluminum color.