Names are in inverted form.
Names are modified by for some substances for user convenience in grouping substances of similar occupational pertinence, such as metallic salts. Some records use chemical or descriptive s from the reference from which toxic data were obtained, particularly when some aspects of the substance's composition are in question, such as plant or animal extracts. These records also have a CD field providing more descriptive information concerning the substance. To facilitate unique prime searching, a hyphen has been added to the end of each single-word prime . Multi-word prime s have been hyphenated only if they consist of letters only, with no numbers, hyphens, parentheses, or other special characters.