Direct Black 19

• Post Date:

  Mar 09,2017

• Expiry Date:

  Mar 09,2018

• Detailed Description:

  Cas No. :6428-31-5 HANGHZOU EMPEROR CHEMICAL CO,,LTD
  
  web：http://www.chinainterdyes.com
  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 Black 19 Physical Properties and light fastness, solubility.
  Direct Black 19
  Dyeing depth % 2
  Insolubles % 0.15
  Light Fastness 3
  Washing Fatness 2
  Rubbing fastness(dry) 4
  Rubbing fastness(wet) 3
  Direct Black 19 Properties:
  
  green and black. Black powder. Soluble in water for green light black, solubility of 100 g/L (80 ��), slightly soluble in ethanol and acetone. The strong sulfuric acid in the green light for black, dilute red after black precipitation; In nitric acid to dark brown. Dyes and microstructure of sulfuric acid solution 10% red; Add thick sodium hydroxide solution for green light blue. Copper ions in dyeing color shade the green, iron ion a slight change in color.
  Direct Black 19 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.
  Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.

• CAS Registry Number:

  6428-31-5

• Synonyms:

  ;C.I. 35255;C.I. Direct Black 19;C.I. Direct Black 19 (VAN);C.I. Direct Black 19, disodium salt;Direct Fast Black G;C.I.Direct Black 19;disodium (3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid;Direct Black G;

• Molecular Formula:

  C₃₄H₂₇N₁₃Na₂S₂O₇

• Molecular Weight:

  839.77

• Molecular Structure:

  

• Company:

  HANGHZOU EMPEROR CHEMICAL CO,,LTD     [ China ]        

• Contact:

  DEMI DAI

• Tel:

  08613025001672

• Fax:

• Email:

  dyes@emperorchem.com