| Section: 6 | Minerals and pigments (MP) | Page: 78 | 
IRUG filename: IMP00078  | Data type: Infrared  | IRUG material class: Minerals and pigments (MP)  | 
Sample type: Reference material  | Common name(s): Prussian blue, Pigment Blue 27 (PB27), CI77510  | Chemical/botanical name(s): Ferric ferrocyanide  | 
CAS name: Ferrate(4-), hexakis(cyano-κC)-, iron(3+) (3:4), (OC-6-11)-, C.I. Pigment Blue 27  | Sample source 1: Winsor & Newton   | Source location 1: London, UK  | 
Sample identifier 1: Forbes Pigment Collection, Straus Conservation Center, Fogg Art Museum  | Sample source 2: 32 Quincy St, Cambridge, MA, 02138, US  | Sample identifier 2: Series No. 1   | 
Sample source 3: Forbes Pigment Collection, Philadelphia Museum of Art, Scientific Laboratory  | Source location 3: Box 7646, Philadelphia, PA, 19101, US  | Color: Blue  | 
Refractive index (NaD20): 1.56  | Application: MFTIR (Fourier transform infrared microspectroscopy)  | Mode: Tran  | 
Originating institution name: Philadelphia Museum of Art  | Originating institution acronym: PMA  | Molecular formula: Fe4[Fe(CN)6]3  | 
CAS registry no: 14038-43-8, 12240-15-2 (PB27)  | Density (g/cc): 1.83  |