#double_salt  a solid solution of two simple salts
  supertype:  salt  primary_solid_solution
  subtype:  Rochelle_salt__Rochelle_salts  a double salt used in Seidlitz powder; acts as a cathartic
  subtype:  Paris_green  a toxic double salt of copper arsenate and copper acetate

No statement uses or specializes double_salt; click here to add one.