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Interactive IRUG Spectrum
| Section: 9 | Organic dyes and pigments (OD) | Page: 34 |
Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)
Details
IRUG filename: IOD00034 | Data type: Infrared | IRUG material class: Organic dyes and pigments (OD) |
Sample type: Reference material | Common name(s): Congo Red, Direct Red 28, Disazo, CI22120 | Trade name(s): Congo Red |
CAS name: 1-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(2,1-diazenediyl)]bis[4-amino-, sodium salt (1:2) | Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes | Source location 1: BASF, Ludwigshafen, Germany |
Sample identifier 1: Congo Red | Sample source 2: Getty Conservation Institute | Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, 90049 |
Sample identifier 2: Congo Red | Color: Yellowish red | 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: C32 H22 N6 O6 S2 * 2 Na | CAS registry no: 573-58-0 |
Related Structure(s)
IRUG Structure Tracking #: 1198 Common Name(s): Direct Red 28; Disazo; CI22120 CAS Name: 1-Naphthalenesulfonic acid, 3,3′-[[1,1′-biphenyl]-4,4′-diylbis(2,1-diazenediyl)]bis[4-amino-, sodium salt (1:2) CAS Registry No: 573-58-0 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C32 H22 N6 O6 S2 * 2Na MW: 696.68 |