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Interactive IRUG Spectrum

Section: 6 Minerals and pigments (MP) Page: 158

 Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)


Details

IRUG filename:
IMP00158
Data type:
Infrared
IRUG material class:
Minerals and pigments (MP)
Sample type:
Reference material
Common name(s):
Viridian w/ weak 1285 & 1252 cm-1 bands suggesting chromium borate, Pigment Green 18 (PG18), CI77289
Chemical/botanical name(s):
Chromium oxide hydrate w/ chromium borate
CAS name:
C.I. Pigment Green 18
Sample source 1:
John W. Masury & Son
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:
Green
Age:
1929, dated, 68 yrs, at least
Application:
MFTIR (Fourier transform infrared microspectroscopy)
Mode:
Tran
Literature Reference:
Zumbuehl, Stefan, et al. “Early Viridian Pigment Composition Characterization of a (Hydrated) Chromium Oxide Borate Pigment.” Studies in Conservation, vol. 54, no. 3, 2009, pp. 149–159.
Originating institution name:
Philadelphia Museum of Art
Originating institution acronym:
PMA
Linear formula:
Cr2O3*xH2O-Cr3BO6
CAS registry no:
12001-99-9 (PG18)