- Home>
- Search IRUG Spectral Database>
- Interactive IRUG Spectrum
Interactive IRUG Spectrum
| Section: 9 | Organic dyes and pigments (OD) | Page: 65 |
Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)
Details
IRUG filename: IOD00065 | Data type: Infrared | IRUG material class: Organic dyes and pigments (OD) |
Sample type: Reference material | Common name(s): Indigo Carmine, Acid Blue 74, Indigoid, CI73015 | Trade name(s): Indigo Carmine |
CAS name: 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, sodium salt (1:2) | Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes | Source location 1: BASF, Ludwigshafen, Germany |
Sample identifier 1: Indigo Carmine | Sample source 2: Getty Conservation Institute | Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, 90049 |
Sample identifier 2: Indigo Carmine | Color: Greenish blue | Age: 1986, acquired |
Application: DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy) | Mode: Refl | Originating institution name: Getty Conservation Institute |
Originating institution acronym: GCI | Molecular formula: C16 H8 N2 O8 S2 * 2 Na | CAS registry no: 860-22-0 |