About the chemical structure:
| Chemical name: | Basic lead(II)-chromate |
| Formula: | PbCrO4 · Pb(OH)2 |
| Crystal system: | Monoclinic - Prismatic (at Mineralogy Database) |
| Refractive index: | alpha = 2.42, beta = 2.7, gamma = 2.7 |
Color:
| Color Index (C.I.) | PO 21 |
How can you identify Chrome orange?
Imaging:
OM: The pigments are microscopically identified by their crystalline particles, the deeper shades having a more rectangular shape. The lighter, more yellow shades have finer particles.
Analytics:
It's identified by means of FTIR and Raman.
Raman spectra: University College London;
FTIR spectra: IRUG;
Usage and handling:
| Permanence: | Toxicity: |
|---|---|
Lightfast: poor. Degradation processes: modern varieties of this pigment are photochemically stabilized. |
moderately toxic. Care should be used in handling the dry powder pigment to avoid inhaling the dust. MSDS: PIGMENT SANAYI |
Literature:
Artists’ Pigments A Handbook of Their History and Characteristics, Vol. 1, L. Feller, Ed, Cambridge University Press, London 1986, p. 208-211
Sections: