Basic Blue 26

Structural formula
General
Surname	CI Basic Blue 26
other names	(4-Anilino-1-naphthyl) bis (4-dimethylaminophenyl) carbenium chloride; Bis (4-dimethylaminophenyl) - (4-anilino-1-naphthyl) methylium hydrochloride; CI 44045; Basic Blue B; Viktoria Blue B; Midnight blue;
Molecular formula	C 33 H 32 ClN 3
Brief description	dark purple powder
External identifiers / databases
EC number	219-943-6
ECHA InfoCard	100.018.131
PubChem	17407
ChemSpider	16736265
Wikidata	Q15632925
properties
Molar mass	506.08 g mol −1
Physical state	firmly
Melting point	206 ° C (decomposition)
solubility	easily soluble in water
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 302-319
	P: 305 + 351 + 338
Authorization procedure under REACH	of particular concern : toxic for reproduction ( CMR )
Toxicological data	1037 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Basic Blue 26 is a dark purple cationic dye from the group of triphenylmethane dyes , which dissolves in water with a blue color.

Extraction and presentation

Basic Blue 26 can be produced by condensation of Michler's ketone with N- phenyl-1-naphthylamine .

properties

The dark blue-violet powder or the dark-bronze colored crystals are easily soluble in hot water and in ethanol . It is poorer in cold water and only sparingly soluble in benzene . It dyes tannic cotton and is not very lightfast.

use

The dye is approved as a dye for cosmetics and food in many countries, but not in the EU , India, Japan and the USA .

Web links

Midnight blue . In: Lueger, Otto: Lexicon of the entire technology and its auxiliary sciences, Vol. 6 Stuttgart, Leipzig 1908, p. 552
Color example ( Memento from March 24, 2013 in the Internet Archive )

Individual evidence

↑ ^a ^b ^c ^d ^e sheet Victoria Blue B, for microscopy (Bact., Hist.) At Sigma-Aldrich , accessed on 12 April 2013 ( PDF ).
↑ ^a ^b ^c ^d Gisbert Otterstätter: Coloring of Food, Drugs, and Cosmetics . CRC Press, 1999, ISBN 0-8247-0215-8 , pp. 219–221 ( limited preview in Google Book search).
↑ Entry in the SVHC list of the European Chemicals Agency , accessed on October 18, 2015.
^ Klaus Hunger: Industrial Dyes . John Wiley & Sons, 2007, ISBN 3-527-60606-8 , pp. 62 ( limited preview in Google Book search).
^ Diphenylnaphthylmethane dyes . In: Meyers Großes Konversations-Lexikon . 6th edition. Volume 5, Bibliographisches Institut, Leipzig / Vienna 1906, p. 34 .

[Sigma-1] sheet Victoria Blue B, for microscopy (Bact., Hist.) At Sigma-Aldrich , accessed on 12 April 2013 ( PDF ).

[Gisbert_Otterstätter-2] Gisbert Otterstätter: Coloring of Food, Drugs, and Cosmetics . CRC Press, 1999, ISBN 0-8247-0215-8 , pp. 219–221 ( limited preview in Google Book search).

[SVHC-3] Entry in the SVHC list of the European Chemicals Agency , accessed on October 18, 2015.

[Klaus_Hunger-4] Klaus Hunger: Industrial Dyes . John Wiley & Sons, 2007, ISBN 3-527-60606-8 , pp. 62 ( limited preview in Google Book search).

[5] Diphenylnaphthylmethane dyes . In: Meyers Großes Konversations-Lexikon . 6th edition. Volume 5, Bibliographisches Institut, Leipzig / Vienna 1906, p. 34 .