aluminium sulphate
(US aluminum sulfate)
noun
A white to colourless crystalline solid used in dyeing as a mordant, in paper manufacture, and as a flocculating agent in the purification of drinking water and treatment of sewage.
- Formula: Al2(SO4)3..
Origin
Mid 19th century; earliest use found in Henry Roscoe (1833–1915), chemist and university administrator.