Chemical Names Used

CHEMICAL NAME. Many compounds have generic as well as chemical names. Systematic names encode the composition and structure of compounds and are based on a detailed set of rules established by the IUPAC. Most entries give the IUPAC name, but in some instance a more standard chemical name used by the chemical community is given. 

In chemical names, use (R) and (S), with designated locants when applicable, as prefixes to designate absolute configuration. 

Studies examining the ability of subjects to accurately report their exposures indicate that the quality of responses is directly linked to the type of questioning. Improvements occur with prompted over open-ended questioning, with chemical names used in the work site over the names of chemical constituents, and with compounds that can be sensed over those which are odorless and invisible (Ahiborg, 1990 Joffe, 1992 Blair and Zahm, 1993 Teschke et al. 1994 Nieuwenhuijsen et al., 1997). 

Name three important antimalarials derived from 8-amino-6-methoxy quinoline nucleus. Give their structure, chemical name, uses and the synthesis of any one drug. 

A review of the selected definitions suggests that there are many important determinants of solvent quality for specific apphcation. Some solvent parameters are conflicting, some not well quantified, and each solvent application requires a unique set of solvent performance criteria. It can be thus anticipated, prior to any analysis, that the chemical structure can be used as the best means of solvent classification for any application. Such a classification is used in this book because of its broad application. Chemical names used are the common names beeause they are generally understood by all solvents users. 

Tables 37.1 and 37.2 provide a compilation of representative values of macroscopic (bulk) density p for many of the more common polymers. For easy reference, the data are listed alphabetically by the name of the polymer. Table 37.1 contains polymers designated by their familiar or trade names (e.g., nylon, rubber), while Table 37.2 lists polymers designated by their chemical names using the prefix poly. These are alphabetized by the letter following this prefix. For example, poly(ethylene) and poly(vinylacetate) are listed under c and v , respectively. In many cases, the density of a given polymer is represented by a range of values (e.g., 0.87-0.93 g/cm ) to reflect variations obtained from different sources of the data.

Because of the complex, chemical names used to describe polymers, they are nearly always referred to by abbreviations. Such abbreviations take the form of a short string of capital letters each capital letter refers to a part of the common name. If the plastics material begins with poly then the first letter is P the other letter (s) are derived from the monomer unit. Names such as polystyrene and polyethylene are thus shortened to PS and PE respectively (see table 1). 

A list of trivial names corresponding to the correct chemical names used here is given in Table I. 

ISO standardized essential oils, INCI chemical names used in this list... 

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