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Section: 9 Organic dyes and pigments (OD) Page: 162

 Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)


Details

IRUG filename:
ROD00162
Data type:
Raman
IRUG material class:
Organic dyes and pigments (OD)
Sample type:
Reference material
Common name(s):
Pigment Brown 23 (PBr23), Disazo Condensation, Azo, CI20060
Trade name(s):
Cromophtal Brown 5R
CAS name:
2-Naphthalenecarboxamide, N,N'-(2-chloro-1,4-phenylene)bis[4-[2-(4-chloro-2-nitrophenyl), diazenyl]-3-hydroxy
Sample source 1:
Ciba
Sample identifier 1:
Cromophtal Brown 5R
Sample source 2:
Tate Gallery
Source location 2:
Millbank, Westminster, London SW1P 4RG, UK
Sample source 3:
National Gallery of Art, Washington, DC, USA
Source location 3:
DCL-SR, Washington DC 20565
Color:
Opaque, brown
Age:
2003, acquired
MW (relative):
850.02, calculated
Application:
Raman microscopy/microspectroscopy
Excitation source (nm):
633
Mode:
Scat
Originating institution name:
United States Naval Academy
Originating institution acronym:
USNA
Molecular formula:
C40 H23 Cl3 N8 O8
CAS registry no:
35869-64-8
Other analytical methods:
LD-MS (laser desorption mass spectrometry), FTIR (Fourier transform infrared spectroscopy)