2811 Inorganic Acids and Inorganic Oxygen Compounds of Non-metals (Excl. Hydrogen Chloride `hydrochloric Acid`, Chlorosulphuric Acid, Sulphuric Acid, Oleum, Nitric Acid, Sulphonitric Acids, Diphosphorus Pentaoxide, Phosphoric Acid, Polyphosphoric Acids, OxideS of Boron and Boric Acids)

In case you need help on a certain topic you can consult our Glossary.