Chrome orange

/ krome   are • inj /

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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

Other oranges
(intro) - Chrome orange - Realgar

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