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Hangzhou Emperor Chemical Co., Ltd.

Direct Black 19, Direct Fast Black G, Direct Black Dyes manufacturer / supplier in China, offering Direct Black 19 Direct Fast Black G Dyes, Direct Dyes Violet 9 for Paper Dyeing, Direct Dyes Yellow 147 for Paper Dyeing and so on.

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Supplier Homepage Product DIRECT DYE Direct Black 19 Direct Fast Black G Dyes

Direct Black 19 Direct Fast Black G Dyes

FOB Price: US $3-8 / kg
Min. Order: 100 kg
Min. Order FOB Price
100 kg US $3-8/ kg
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Port: Shanghai, China
Production Capacity: 8000000mt/Year
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: Direct black 19
  • Appearance: Powder
  • Application Material: Paper
  • Content: 100%
  • Trademark: EMPEROR
  • Specification: 25kg
  • HS Code: 32041400
  • Colour: Black
  • Usage: Paper, Ink, Leather, Textile
  • Name: Direct Black 19
  • C.I.No.: 35255
  • Transport Package: 25kg/Bag, Drum, Carton
  • Origin: China
Product Description
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
Dyeing depth %2
Insolubles %0.15
Light Fastness3
Washing Fatness2
Rubbing fastness(dry)4
Rubbing fastness(wet)3
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 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.
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.
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