Arsenic trisulfide, As2S3, a yellow mineral used as a pigment.
arsenic trisulphide, occurring naturally in crystals or huge build up, previously made use of as a dye or pigment
Arsenic sesquisulphide, produced unnaturally as an amorphous lemon-yellow dust, and happening naturally as a yellow crystalline mineral; -- formerly known as auripigment. It is utilized in king's yellowish, in white Indian fire, and in certain technical procedures, as indigo printing.
Arsenic trisulphid, As2S3.
a yellow mineral happening in conjunction with realgar; an ore of arsenic