6786-84-1

Basic information

• Product Name: Solvent Blue 6
• Synonyms: Solvent Blue 6;alpha,alpha-bis[4-(dimethylamino)phenyl]-4-(ethylamino)naphthalene-1-methanol;1-Naphthalenemethanol, alpha,alpha-bis(4-(dimethylamino)phenyl)-4-(eth ylamino)-;C.I.44040:1;C.I.Solvent Blue 6;α,α-Bis[4-(dimethylamino)phenyl]-4-(ethylamino)-1-naphthalenemethanol;Einecs 229-852-3
• CAS NO: 6786-84-1
• Molecular Formula: C₂₉H₃₃N₃O
• Molecular Weight: 439.59182
• EINECS: 229-852-3
• Product Categories: Solvent Dyestuff
• Mol File: 6786-84-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 646.4ºC at 760 mmHg
• Flash Point: 344.8ºC
• Appearance: /
• Density: 1.168
• Vapor Pressure: 1.36E-17mmHg at 25°C
• Refractive Index: 1.677
• PKA: 13.83±0.29(Predicted)
• CAS DataBase Reference: Solvent Blue 6(CAS DataBase Reference)
• NIST Chemistry Reference: Solvent Blue 6(6786-84-1)
• EPA Substance Registry System: Solvent Blue 6(6786-84-1)

Safety Data

• Hazardous Substances Data: 6786-84-1(Hazardous Substances Data)

Usage

Description

Solvent Blue 6 is a dark blue dye that is slightly soluble in water, but becomes soluble in hot water, ethanol, and concentrated sulfuric acid. It has a melting point of over 180°C and is stable under heat. It is mainly used for paper printing and rubber coloring.

Uses

Used in Paper Printing Industry:
Solvent Blue 6 is used as a dye for paper printing due to its dark blue color and solubility in hot water.
Used in Rubber Coloring Industry:
Solvent Blue 6 is used as a coloring agent for rubber due to its solubility in ethanol and its ability to provide a dark blue color.
Solvent Blue 6 has poor light fastness and is insoluble in water, but it is well soluble in sodium carbonate (5%) and slightly soluble in hydrochloric acid (5%).

Preparation

(a) Bis (4 – (dimethylamino) phenyl) methanol and N-Ethylnaphthalen-1-amine condensation, and make the product into N – nitroso derivatives, and oxidation, remove nitroso, and made free base; 4-(4-(Dimethylamino)benzyl)-N,N-dimethylbenzenamine and N-Ethylnaphthalen-1-amine condensation, and made free base.

Standard

Light Fastness

Melting point

Stable

ISO

Poor

InChI:InChI=1/C29H33N3O/c1-6-30-28-20-19-27(25-9-7-8-10-26(25)28)29(33,21-11-15-23(16-12-21)31(2)3)22-13-17-24(18-14-22)32(4)5/h7-20,30,33H,6H2,1-5H3

Upstream product

• 97211-68-2 4,4'-bis dimethylamino diphenyl 4''-monoethylamino 1-naphthyl carbocation 

Relevant articles and documents

A study on equilibrium and kinetics of carbocation-to-carbinol conversion for di- and tri- arylmethane dye cations in aqueous solutions: Relative stabilities of dye carbocations and mechanism of dye carbinol formation

Arylmethane dye cations form a structurally interesting set of stable carbocations. A detailed study on rate-equilibria of carbinol formation from two diarylmethane and nine triarylmethane dye carbocations in aqueous solutions has been carried out using spectrophotometric measurements. The conclusions reached are : (i) The stability order found (auramine O>crystal violet = methyl violet > victoria blue R > victoria pure blue BO = ethyl violet > pararosaniline > brilliant green > malachite green > carbocation form of Michler's hydrol > methyl green), seems to be determined by an interplay of dye carbocation / carbinol conformation and stereoelectronic effects of substituents; and (ii) carbinol formation is general base catalysed and occurs by the rate determining attack of a H2O molecule on the dye carbocation centre via two kinetic pathways one mediated by another H2O molecule and the other by a OH ion.