Interactive IRUG Spectrum

Section: 9

Organic dyes and pigments (OD)

Page: 640

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

Details

IRUG filename: ROD00640	Data type: Raman	IRUG material class: Organic dyes and pigments (OD)
Sample type: Reference material	Common name(s): 5,5'-dibromoindigo (5,5'-DBI), Vat Blue 35, Indigoid, CI73060	CAS name: (2E)-5-bromo-2-(5-bromo-3-oxo-1H-indol-2-ylidene)-1H-indol-3-one
Sample source 1: Sigma Aldrich	Source location 1: 3050 Spruce St., Louis, Mo, US	Sample identifier 1: PH002016
Sample source 2: Indianapolis Museum of Art at Newfields	Source location 2: 4000 Michigan Rd, Indianapolis IN, 46208, US	Sample identifier 2: 5,5'-Dibromoindigo, PH002016
Color: Blue, dark, opaque	MW (relative): 420.05, calculated	Application: Raman microscopy/microspectroscopy
Excitation source (nm): 532	Mode: Scat	Literature Reference: Smith, Gregory Dale, et al. “Analytical Characterization of 5,5′-Dibromoindigo and Its First Discovery in a Museum Textile.” Heritage Science, vol. 7, no. 1, 2019, https://doi.org/10.1186/s40494-019-0305-7.
Originating institution name: Indianapolis Museum of Art at Newfields	Originating institution acronym: IMA	Molecular formula: C16 H8 Br2 N2 O2
CAS registry no: 84-40-2	Other analytical methods: LC-MS (liquid chromatography-mass spectrometry), FTIR (Fourier transform infrared spectroscopy)

Related Structure(s)

IRUG Structure Tracking #: 1133 Common Name(s): 5,5'-dibromoindigo; Vat Blue 35; CI73060 Chemical Name(s): (2E)-5-bromo-2-(5-bromo-3-oxo-1H-indol-2-ylidene)-1H-indol-3-one CAS Registry No: 84-40-2 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C16 H8 Br2 N2 O2 MW: 420.05