| Section: 9 | Organic dyes and pigments (OD) | Page: 184 | 
IRUG filename: IOD00184  | Data type: Infrared  | IRUG material class: Organic dyes and pigments (OD)  | 
Sample type: Reference material  | Common name(s): Ellagic acid, CI55005, CI75270  | CAS name: [1]Benzopyrano[5,4,3-cde][1]benzopyran-5,10-dione, 2,3,7,8-tetrahydroxy-  | 
Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes  | Source location 1: BASF, Ludwigshafen, Germany  | Sample identifier 1: Ellagic acid  | 
Sample source 2: Getty Conservation Institute  | Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, 90049  | Sample identifier 2: Ellagic acid  | 
Color: Yellow to brown, light  | Age: 1986, acquired  | MW (relative): 302.19, calculated  | 
Application: DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)  | Mode: Refl  | Originating institution name: Getty Conservation Institute  | 
Originating institution acronym: GCI  | Molecular formula: C14 H6 O8  | CAS registry no: 476-66-4  | 
IRUG Structure Tracking #: 234 Common Name(s): Ellagic acid; CI 55005; CI 75270 CAS Name: [1]Benzopyrano[5,4,3-cde][1]benzopyran-5,10-dione, 2,3,7,8-tetrahydroxy- CAS Registry No: 476-66-4  IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C14 H6 O8 MW: 302.19  |