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Interactive IRUG Spectrum

Section: 6 Minerals and pigments (MP) Page: 97

 Copyright © 1993-2025 Infrared and Raman Users Group (IRUG)


Details

IRUG filename:
IMP00097
Data type:
Infrared
IRUG material class:
Minerals and pigments (MP)
Sample type:
Reference material
Common name(s):
Cobalt blue, Pigment Blue 28 (PB28), CI77346
Chemical/botanical name(s):
Cobalt aluminate
CAS name:
C.I. Pigment Blue 28, Aluminum cobalt oxide (Al2CoO4)
Sample source 1:
Stanley Daggett
Sample source 2:
Forbes Pigment Collection, Straus Conservation Center, Fogg Art Museum
Source location 2:
32 Quincy St, Cambridge, MA 02138
Sample source 3:
Forbes Pigment Collection Subset, Philadelphia Museum of Art, Scientific Laboratory, Marigene Butler
Source location 3:
Box 7646, Philadelphia, PA, 19101, US
Color:
Blue
Age:
Dated 1927, at least 71 yrs
Application:
MFTIR (Fourier transform infrared microspectroscopy)
Mode:
Tran
Originating institution name:
Philadelphia Museum of Art
Originating institution acronym:
PMA
Molecular formula:
Al2 Co O4
Linear formula:
CoO*Al2O3
CAS registry no:
1345-16-0 (PB28), 1333-88-6