Compendium of Analytical Nomenclature

The Compendium of Analytical Nomenclature is a book published by the International Union of Pure and Applied Chemistry (IUPAC) containing internationally accepted definitions for terms in analytical chemistry. It has traditionally been published in an orange cover, hence its informal name, the Orange Book.

Although the book is described as the "Definitive Rules", there have been three editions published; the first in 1978 (ISBN 0-08022-008-8), the second in 1987 (ISBN 0-63201-907-7) and the third in 1998 (ISBN 0-86542-615-5). The third edition is also available online. A Catalan translation has also been published (1987, ISBN 84-7283-121-3).