Annual supplements are published to keep the dictionary up-to-date.
Data provided in each entry includes (where relevant): molecular formula; structure diagram; preferred names and synonyms; CAS registry numbers; physical description; biological source; stability; solvent of recrystallisation; solubility; melting point; freezing point; boiling point; density; refractive index; optical rotation; use or importance; hazard and toxicity data; selected literature references.