Titanium yellow

Titanium yellow is a yellow pigment with the chemical composition NiO·Sb₂O₃·20TiO₂. It is considered a complex inorganic color pigment, formerly known as a mixed phase metal oxide. The pigment has a rutile crystal lattice, with 2-5% of titanium ions replaced with nickel and 9-12% of them replaced with antimony.

Properties

Titanium yellow has a melting point above 1000 °C and extremely low solubility in water.
As other CICPs, it has excellent heat stability and good chemical stability.

Production

CICPs such as titanium yellow are manufactured by calcining fine powders of metal oxides, hydroxides, or carbonates in solid state at temperatures between 650 and 1300 °C.

Use

Titanium yellow is used primarily as a pigment for plastics and ceramic glazes, and in art painting.
It also finds use in high-end applications such as automotive and coil coatings.

Safety

While titanium yellow contains antimony and nickel, it is considered relatively inert and can be regarded as "physiologically and environmentally harmless."