Direct Black 17
Name:C.I.Direct Black 17,C.I.27700
Molecular Structure: Double azo class
C.I.Direct Black 17,C.I.27700,CAS 2945-96-2,528.52,C24H21N6NaO5S,direct Black D,Direct Black SD,Direct Grey D
Molecular Formula:C24H21N6NaO5S
Molecular Weight: 528.52
CAS Registry Number:2945-96-2
Manufacturing Methods : (a) 4-Nitrobenzenamine diazo, and 2-Amino-4-methylanisole coupling, again diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then will the nitro reduction for amino; (b) N-(4-aminophenyl)acetamide diazo, and 2-Amino-4-methylanisole close, then diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid hydrolysis, then three amino acetylcholine.
Properties and Applications: green light gray to green and black. Black powder. Soluble in water for violet black, 80 ℃ in the solubility of 20 g/L, soluble in ethanol gray light purple. The strong sulfuric acid is a deep blue in green, orange brown after diluted precipitation. The dye solution to join strong hydrochloric acid for dark brown, have precipitation; Adding concentrated sodium hydroxide solution in gray light purple precipitate. Cellulose fiber of dyeing, the dye absorption rate as well, in 40 ~ 80 ℃ maximum of affinity, discharge the gender is good. Used for cotton or viscose dyeing, is not used for printing. Can also be used for silk, PVA, polyamide fiber and its blended fabric dyeing.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 2 | 3-4 | 3 | 2 | 2 | ||
| AATCC | 5 | 3 | 3 | 3 | 3 | ||
List of Suppliers:
Benzo Black DS( Bayer Group )
Diazamine Black ( Clariant GmbH )
direct Black D (Sinochem Ningbo Imp & Exp Corp)
Direct Black D (Chemische Fabriek Triade BV)
Direct Black R (Amar Impex)
Direct Black SD ( Frado )
Direct Grey D(Sinochem Tianjin Imp Exp Corp)
Direct Grey D(Sinochem Hebei Imp & Exp Corp)
Direct Grey D(Brighten Colorchem BV)
Direct Grey D (Shandong Qing Shun Chemical Co., Ltd.)
Direct Grey D (Nanjing Chemicals Import and Export Corp)
Dycosdirect Grey D (Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)
Grey D (Sinochem Liaoning Import & Export Corporation)
Hispadiazo Black D( S A Robama )
Japanol Fast Black D conc.( Sumitomo Chemical Co. Ltd )
Vilmamin Diazo Black D ( Vilmax SA )
Zambesi Black D(CBW Chemie GmbH Bitterfeld-Wolfen)