Ethyne, also known as acetylene, is an organic chemical compound with the chemical formula C2H2.
Formaldehyde (HCHO), also called methanal, an organic compound, the simplest of the aldehydes, used in large amounts in a variety of chemical manufacturing processes.
Illustrated Glossary of Organic Chemistry - Hydrochloric acid (muriatic acid) An aqueous solution of HCl, containing up to 35% by weight HCl. Best described as H3O+ Cl-. A strong acid; H3O+ pKa -1.78.
