Chromium antimony titanate
Description
A lightfast, opaque, synthetic organic pigment made about 1946. Chrome titanate is a mixed metal pigment that has a rutile structure. It was created to provide a stable, non-toxic alternative to traditional lead- or chromate-based brown and yellow pigments. Analysis shows the approximate proportions are 2-5% chromic oxide, 10-20 % antimony pentoxide, with the remainder titanium dioxide. The additions of electropositive elements will both intensify and darken the yellow color. Its hue ranges from warm yellow-brown to olive-brown, depending on the precise formulation and particle size. Chrome titanate was originally developed as a vinyl siding pigment that retain its color under prolonged sunlight exposure. Its use transitioned into paints, ceramics, plastics and other finishes. In artist paints, chrome titanate is considered as a safe alternative to Naples yellow due to its excellent lightfastness, heat stability and chemical resistance.
Synonyms and Related Terms
Chrome titanate; Pigment Brown 24; CI 77310; chrome titanate yellow; chrome titanium yellow; titanium yellow rutile; titanium orange
Risks
- Non-toxic
- Avoid dust and spray
Physical and Chemical Properties
- Color = earthy, dark yellow to yellow-brown shade
- Resistant to light, hear, and chemicals
- Composition = (Ti, Cr, Sb) O2
- CAS = 68186-90-3
- Inert, stable to 1300 C.
Resources and Citations
- C. J. Harbeck, 'Ceramic Pigments' Industrial and Engineering Chemistry, 30(7), 1938.
- Artists Pigment.org: Chrome Antimony Titanate
- Art is Creation: Pbr24
- Handprint.com: PBr24
- IRUG: IR spectrum for Chrome titanium yellow
- CHSOS: Spectra (Reflectance, XRF, Raman, FTIR) for Chrome titanate