Antimony orange
Composition and Properties of Antimony Orange
Antimony orange (Golden yellow, golden sulfur of antimony) is most probably a non-stoichiometric compound of antimony, sulfur, and oxygen with an approximate formula of 2 Sb2S3•Sb2O3. Its color can vary from yellow to orange to deep crimson red. The pigment is considered lightfast but should not be used together with lead-containing or copper-containing pigments.
Names
Golden sulfur of antimony, golden yellowPR 107, CI 77060From Old French antimoine and directly from Medieval Latin antimonium (11c.), of obscure origin. From Online Etymology Dictionary
Preparation
The pigment can be prepared by precipitation of a solution of antimony chloride (SbCl3) with sodium thiosulfate (Na2S2O3) or hydrogen sulfide (H2S)(1).
History of Use
The pigment had been first prepared in the 19th-century.
