arsenic trisulfide
Noun
Meaning
English Wikipedia has an article on:arsenic trisulfideWikipedia
arsenic trisulfide (uncountable)
(inorganic chemistry) The bright yellow sulfide of arsenic, As2S3, that occurs as the mineral orpiment, and has been used as a pigment
Examples
Arsenic trisulfide and a thickener were added to the indigo vat.