Principles of general chemistry

GENERAL INTRODUCTION TO THE CHEMISTRY OF DYES 1. Principles of Colour Chemistry

Unlike most organic compounds, dyes possess colour because they 1) absorb light in the visible spectrum (400–700 nm), 2) have at least one chromophore (colour-bearing group), 3) have a conjugated system, i.e. a structure with alternating double and single bonds, and 4) exhibit resonance of electrons, which is a stabilizing force in organic compounds (Abrahart, 1977). When any one of these featu...

Application of the principles of green chemistry in analytical chemistry*

The introduction of the dimension of green chemistry into the assessment of analytical methods should be a natural development trend in chemistry and should coincide with its general policy. Some of the principles of green chemistry—such as prevention of waste generation; safer solvents and auxiliaries; design for energy efficiency; safer chemistry to minimize the potential of chemical accident...

Basic Principles of Organic Chemistry Second Edition Basic Principles of Organic Chemistry Second Edition

PREFACE N o period in the history of organic chemistry has been as dynamic and productive of research accomplishment as the twelve years between the completion of the first and present editions of this textbook. New reagents, new reactions, and extraordinary syntheses have been manifold. New techniques and new instruments for analysis and determination of structures, improved methods for theore...

Colloid Chemistry; Principles and Applications

COLLOID CHEMISTRY; PRINCIPLES AND APPLICATIONS. By Jerome Alexander, M.Sc., Consulting Chemist and Chemical Engineer. Third Edition. D. Van Nostrand Company, Inc., New York, 1929. pp. X+270. The author's treatment of principles occupies 75 pages, practical applications are given I58 pages, and there is a brief appendix entitled Experimental Suggestions or Laboratory Manual. This division of spa...

Green Chemistry: Terminology and Principles