Pigment yellow 12

Structural formula
General
Surname	Pigment yellow 12
other names	2,2 '- [(3,3'-Dichlorobiphenyl-4,4'-diyl) -bis (azo)] bis [3-oxo- N -phenyl] butanoic acid amide; Pigment yellow 12; CI 21090; Benzidine yellow;
Molecular formula	C 32 H 26 Cl 2 N 6 O 4
Brief description	yellow solid
External identifiers / databases
EC number	228-787-8
ECHA InfoCard	100.026.170
PubChem	186342
ChemSpider	161985
Wikidata	Q15720578
properties
Molar mass	629.50 g mol −1
Physical state	firmly
density	1.39 g cm −3
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

CI Pigment Yellow 12 (benzidine yellow ) is a chemical compound from the group of disazo and diaryl yellow pigments .

Extraction and presentation

Pigment Yellow 12 is industrially with a tetrazotization of 3,3'-dichlorobenzidine , followed by azo coupling of acetoacetanilide recovered.

properties

Pigment Yellow 12 is a yellow solid that is practically insoluble in water. It decomposes when heated above 310 ° C. It has a crystal structure with the space group P 2 ₁ / n (space group no. 14, position 2) . Template: room group / 14.2

use

Pigment Yellow 12 is used as a pigment in printing inks .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Entry on benzidine yellow in the GESTIS substance database of the IFA , accessed on March 30, 2020(JavaScript required) .
^ ^A ^b Martin U. Schmidt, Robert E. Dinnebier, Holger Kalkhof: Crystal Engineering on Industrial Diaryl Pigments Using Lattice Energy Minimizations and X-ray Powder Diffraction. In: The Journal of Physical Chemistry B. 111, 2007, p. 9722, doi : 10.1021 / jp071731p .
↑ Werner Baumann, Bettina Herberg-Liedtke: Printing chemicals data and facts on environmental protection . Springer-Verlag, 2013, ISBN 978-3-642-97337-6 , pp. 892 ( limited preview in Google Book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g Entry on benzidine yellow in the GESTIS substance database of the IFA , accessed on March 30, 2020(JavaScript required) .

[DOI10.1021/jp071731p-2] A ^b Martin U. Schmidt, Robert E. Dinnebier, Holger Kalkhof: Crystal Engineering on Industrial Diaryl Pigments Using Lattice Energy Minimizations and X-ray Powder Diffraction. In: The Journal of Physical Chemistry B. 111, 2007, p. 9722, doi : 10.1021 / jp071731p .

[Werner_Baumann,_Bettina_Herberg-Liedtke-3] Werner Baumann, Bettina Herberg-Liedtke: Printing chemicals data and facts on environmental protection . Springer-Verlag, 2013, ISBN 978-3-642-97337-6 , pp. 892 ( limited preview in Google Book search).