2538-85-4

Basic information

• Product Name: Mordant Black 17
• Synonyms: MORDANT BLACK 17;PALATINE CHROME BLACK 6BN;PALATINE CHROME BLACK R;SUNCHROMINE BLUE BLACK R;SUPERCHROME BLUE B EXTRA;SOLOCHROME DARK BLUE;ZINCHROME R;2-HYDROXY-1-(2-HYDROXY-1-NAPHTHYLAZO)-NAPHTHALENE-4-SULFONIC ACID SODIUM SALT
• CAS NO: 2538-85-4
• Molecular Formula: C₂₀H₁₃N₂O₅S*Na
• Molecular Weight: 416.39
• EINECS: 219-810-2
• Product Categories: Dyes and Pigments;Azo Compounds;Naphthylazo Compounds;Analytical Chemistry;Chelating Reagents
• Mol File: 2538-85-4.mol
• Article Data: 0

Chemical Properties

• Appearance: Dark brown to black/Powder
• Storage Temp.: Store at +5°C to +30°C.
• Solubility: 20g/l
• Water Solubility: 20 g/L (20 ºC)
• Stability: Stable. Incompatible with strong oxidizing agents.
• CAS DataBase Reference: Mordant Black 17(CAS DataBase Reference)
• NIST Chemistry Reference: Mordant Black 17(2538-85-4)
• EPA Substance Registry System: Mordant Black 17(2538-85-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 3
• RTECS: QK2200000
• Hazardous Substances Data: 2538-85-4(Hazardous Substances Data)

Usage

Chemical Properties

dark brown to purple powder

Uses

Mordant Black 17 can be prepared to use as blue acid dye.

Preparation

4-Amino-3-hydroxynaphthalene-1-sulfonic acid diazotization, and Naphthalen-2-ol coupling.

Properties and Applications

dark red light navy blue to black. Dark brown powder. Soluble in water for wine red to purplish red, in the water solubility is 50 g/l (80 ℃), soluble in Cellosolve, slightly soluble in ethanol and Acetone, insoluble in other organic solvent. In concentrated sulfuric acid for blue, dilution after pale red light brown, precipitation, In concentrated nitric acid for yellow; In 10% of sodium hydroxide solution to red. Its aqueous solution to join concentrated hydrochloric acid into olive yellow brown, precipitation, Add people concentrated sodium hydroxide solution into purple black. Dyeing encounter copper ion colour and lustre more red, can’t and iron ion contact. Mainly used for wool fabric and silk and nylon after chrome dyeing, but also can be used for wool and a variety of fiber blended fabric dyeing. Can be in acetic acid chromium pretreatment of wool fabric direct printing, also can be used for leather and biological dyeing. Is tasted can be used for indicator. Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water Alkali Acid ISO 4-5 7-8 5 3-4 5 5 5 AATCC 4-5 6 4-5 4-5 5 5

Standard

Ironing Fastness

Alkali

Acid

ISO

4-5

AATCC

4-5

Purification Methods

Free it from metallic impurities by three precipitations from aqueous solution by addition of HCl. The precipitated dye is dried at 60o under vacuum and converted into the Na salt with the calculated amount of alkali. It is an indicator in the complexometry of Al, Fe and Zr. [Beilstein 16 H 297, 16 IV 428.]

InChI:InChI=1/C20H14N2O5S.Na/c23-16-10-9-12-5-1-2-6-13(12)19(16)21-22-20-15-8-4-3-7-14(15)18(11-17(20)24)28(25,26)27;/h1-11,23-24H,(H,25,26,27);/q;+1/p-1

Synthetic route

sodium (2,2'-dihydroxy naphthyl-(1) azonaphthalene-(1') 4-sulfonate) (2538-85-4) → 2-Hydroxy-1,4-naphthoquinone (83-72-7)

Conditions	Yield
With sodium hydroxide; oxygen Mechanism; other Eriochrome type dyes;

oxovanadium(II) dihydroxide + sodium (2,2'-dihydroxy naphthyl-(1) azonaphthalene-(1') 4-sulfonate) (2538-85-4) → sodium oxo (2,2'-dihydroxo 4-sulfonato naphthyl-(1) azonaphthaline-(1')) vanadate (IV) hydrate * water

Conditions	Yield
In water boiling in H2O, 6 hours, cooling down, filtration and evaporation;;
In water boiling in H2O, 6 hours, cooling down, filtration and evaporation;;

sodium (2,2'-dihydroxy naphthyl-(1) azonaphthalene-(1') 4-sulfonate) (2538-85-4) → C20H12BrN2O5S(1-)*Na(1+)

Conditions	Yield
With bromine

Downstream Products

• 83-72-7 2-hydroxynaphtho-1,4-quinone