Benzyl Violet 4B

Structural formula
General
Surname	Benzyl Violet 4B
other names	alpha- [4- (4-dimethylamino-alpha- {4- [ethyl- (3-natriosulfonatobenzyl) amino] phenyl} benzylidene) cyclohexa-2,5-dienylidene (ethyl) ammonio] toluene-3-sulfonate; Acid Violet 49; CI Acid Violet 49; CI 42640;
Molecular formula	C 39 H 41 N 3 NaO 6 S 2
Brief description	Solid
External identifiers / databases
EC number	216-901-9
ECHA InfoCard	100.015.365
PubChem	5284479
ChemSpider	4447543
Wikidata	Q11854090
properties
Molar mass	734.9 g mol −1
Physical state	firmly
Melting point	245–250 ° C (decomposition)
solubility	soluble in water and ethanol
safety instructions
GHS hazard labeling from Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary Caution
H and P phrases	H: 351
	P: 281
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Benzyl violet 4B is a chemical compound of sodium from the group of triphenylmethane dyes .

Extraction and presentation

Benzyl violet 4B can be prepared by condensation of 4-dimethylaminobenzaldehyde with α- ( N -ethylanilino) -4-toluenesulfonic acid , followed by oxidation and conversion to the sodium salt. It is also possible to prepare it by condensing α- ( N -ethylanilino) -3-toluenesulfonic acid with formaldehyde and oxidation in the presence of N , N -dimethylaniline .

properties

Benzyl Violet 4B is a black solid.

use

Benzyl violet 4B was used as the dye. It was used as a food and cosmetic dye until 1973, then for dyeing textiles and as a printing ink.

Individual evidence

↑ ^a ^b ^c ^d ^e Entry on Benzyl violet 4B in the GESTIS substance database of the IFA , accessed on December 31, 2019(JavaScript required) .
↑ ^a ^b ^c Entry on Benzyl Violet in the Hazardous Substances Data Bank , accessed June 1, 2018.
↑ Entry on [4 - [[4- (dimethylamino) phenyl] [4- [ethyl (3-sulphonatobenzyl) amino] phenyl] methylene] cyclohexa-2,5-dien-1-ylidene] (ethyl) (3-sulphonatobenzyl ) ammonium, sodium salt Template: Linktext-Check / Escaped in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 31, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ Richard J. Lewis, Sr .: Hazardous Chemicals Desk Reference . John Wiley & Sons, 2008, ISBN 978-0-470-33445-4 , pp. 657 ( limited preview in Google Book search).
^ Jeanne Mager Stellman: Encyclopaedia of Occupational Health and Safety: The body, health care, management and policy, tools and approaches . International Labor Organization, 1998, ISBN 92-2109814-1 , p. PT4 ( limited preview in Google Book search).
↑ M. Clark: Handbook of Textile and Industrial Dyeing Principles, Processes and Types of Dyes . Elsevier, 2011, ISBN 978-0-85709-397-4 , pp. 506 ( limited preview in Google Book search).

[GESTIS-1] Entry on Benzyl violet 4B in the GESTIS substance database of the IFA , accessed on December 31, 2019(JavaScript required) .

[HSDB-2] Entry on Benzyl Violet in the Hazardous Substances Data Bank , accessed June 1, 2018.

[CLP_100.015.365-3] Entry on [4 - [[4- (dimethylamino) phenyl] [4- [ethyl (3-sulphonatobenzyl) amino] phenyl] methylene] cyclohexa-2,5-dien-1-ylidene] (ethyl) (3-sulphonatobenzyl ) ammonium, sodium salt Template: Linktext-Check / Escaped in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 31, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .

[Richard_J._Lewis,_Sr.-4] Richard J. Lewis, Sr .: Hazardous Chemicals Desk Reference . John Wiley & Sons, 2008, ISBN 978-0-470-33445-4 , pp. 657 ( limited preview in Google Book search).

[Jeanne_Mager_Stellman-5] Jeanne Mager Stellman: Encyclopaedia of Occupational Health and Safety: The body, health care, management and policy, tools and approaches . International Labor Organization, 1998, ISBN 92-2109814-1 , p. PT4 ( limited preview in Google Book search).

[M._Clark-6] M. Clark: Handbook of Textile and Industrial Dyeing Principles, Processes and Types of Dyes . Elsevier, 2011, ISBN 978-0-85709-397-4 , pp. 506 ( limited preview in Google Book search).