| Section: 9 | Organic dyes and pigments (OD) | Page: 179 | 
IRUG filename: IOD00179  | Data type: Infrared  | IRUG material class: Organic dyes and pigments (OD)  | 
Sample type: Reference material  | Common name(s): Brazilin, Natural Red 24, CI75280  | CAS name: Benz[b]indeno[1,2-d]pyran-3,6a,9,10(6H)-tetrol, 7,11b-dihydro-, (6aS,11bR)-  | 
Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes  | Source location 1: BASF, Ludwigshafen, Germany  | Sample identifier 1: Brazilin  | 
Sample source 2: Getty Conservation Institute  | Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, 90049  | Sample identifier 2: Brazilin  | 
Color: None/colorless  | Age: 1986, acquired  | MW (relative): 286.27, literature  | 
Application: DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)  | Mode: Refl  | Originating institution name: Getty Conservation Institute  | 
Originating institution acronym: GCI  | Molecular formula: C16 H14 O5  | CAS registry no: 474-07-7  |