Subcategories:
— containing hydrogen or hydracids (7)
— containing nitrogen (14)
— containing oxygen or oxy-acids (2)
— containing halogen (18)
— containing silicon (3)
— containing phosphorous (4)
— containing sulphur (25)
— containing selenium (2)
— containing tellorium (3)
— containing osmium (2)
— containing metal ion (3)
— containing cyanide (5)
— other named acids (22)