Basic information Safety Supplier Related

Direct Black 103

Basic information Safety Supplier Related

Direct Black 103 Basic information

Product Name:
Direct Black 103
Synonyms:
  • Direct Black 103
  • 1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[4-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-
  • C.I.Direct Black 103:C.I.34179
CAS:
25180-17-0
MF:
C40H27N7O13S4
MW:
941.94
Mol File:
25180-17-0.mol
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Direct Black 103 Chemical Properties

Density 
1.75±0.1 g/cm3(Predicted)
pka
-0.79±0.40(Predicted)
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Direct Black 103 Usage And Synthesis

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and Naphthalen-1-amine coupling, again diazo, and 8-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling.

Properties and Applications

blue grey. To black uniform powder. Soluble in water for violet solution, not soluble in alcohol. The strong sulfuric acid in the green light for gray blue, for purple diluted. The dye solution to join strong hydrochloric acid as dark blue precipitation; Add thick hydrogen oxidation sodium solution blue-purple precipitation. Cellulose fiber of dyeing, the dye absorption rates generally do, in 100 ℃ temperature when the biggest affinity, good levelness. Dyeing copper ions in without the should be, not sensitive to that fights. Mainly used for cotton, viscose, silk and wool/stick blended fabric dyeing and printing.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 4 5 3-4 3-4

Direct Black 103Supplier

Dynasty Colourants Co., Ltd.
Tel
86 0574 27862107 27862719
Email
info@dynasty-color.com