《兰氏手册》Preface.pdfVIP

PREFACE TO FIFTEENTH EDITION This new edition, the fifth unde rthe aegis of the present editor, remains the one-volume source of factual information fo rchemists, both professionals and students—the first place in which to “look it up” on the spot. The aim is to provide sufficient data to satisfy all one’s general needs without recourse to othe eference sources. A use rwill find this volume of value as a time-save rbecause of the many tables of numerical data which have been especially compiled. Descriptive properties fo ra basic group of approximately 4300 organic compounds are compiled in Section 1, an increase of 300 entries. All entries are listed alphabetically according to the senio rprefix of the name. The data fo reach organic compound include (where available) name, structural formula, formula weight, Beilstein reference (o rif un- available, the entry to the Merck Index, 12th ed.), density, refractive index, melting point, boiling point, flash point, and solubility (citing numerical values if known) in wate rand various common organic solvents. Structural formulas eithe rtoo complex o rtoo ambig- uous to be rendered as line formulas are grouped at the bottom of each facing double page on which the entries appear. Alternative names, as well as trivial names of long-standing usage, are listed in thei espective alphabetical orde rat the bottom of each double page in the regula ralphabetical sequence. Anothe rfeature that assists the use rin locating a desired entry is the empirical formula index. Section 2 on General Information, Conversion Tables, and Mathematics has had the table on general conversion factors thoroughly reworked. Similarly the material on Statis- tics in Chemical Analysis has had its contents more than doubled