arsenic trisulfide


Also found in: Wikipedia.

arsenic trisulfide

[′ärs·ən·ik ‚tri′səl‚fīd]
(inorganic chemistry)
As2S3 An acidic compound in the form of yellow or red monoclinic crystals with a melting point at 300°C; occurs as the mineral orpiment; used as a pigment.
Mentioned in ?
References in periodicals archive ?
One form, arsenic trisulfide ([As.sub.2][S.sub.3]) upon heating 'cracks' to produce a gaseous arsenic in the form of [As.sub.4][S.sub.6].
By 3000 BCE, they added red lead ([Pb.sub.3][O.sub.4]), malachite (basic copper carbonate), orpiment (arsenic trisulfide), charcoal, and red madder (from the root of the plant Rubia tinctorum).