Registry numbers for

This article discusses the benzenepolycarboxyhc acids, their anhydrides, and their esters. Table 1 includes lUPAC nomenclature, common names, and CAS Registry Numbers for the benzenepolycarboxyhc acids. These acids and anhydrides are highly stable. The carboxyUc acid groups provide from two to six sites for reaction for a wide variety of products, mostly polymers and plasticizers. 

Table 3. CAS Registry Numbers for Source-Based Monomers...

Table 4. CAS Registry Numbers for Constitutional Repeat Unit...

AU products Usted have flash point (PMCC) > 177°C. The specific gravity at 25°C ranges from 1.27 to 1.31. CAS Registry Number for aU the LPs Usted is [68611-50-7] ie, they are copolymers made from (3) and 1,2,3-trichloropropane, and sodium polysulfide. 

When additional substituents ate bonded to other ahcycHc carbons, geometric isomers result. Table 2 fists primary (1°), secondary (2°), and tertiary (3°) amine derivatives of cyclohexane and includes CAS Registry Numbers for cis and trans isomers of the 2-, 3-, and 4-methylcyclohexylamines in addition to identification of the isomer mixtures usually sold commercially. For the 1,2- and 1,3-isomers, the racemic mixture of optical isomers is specified ultimate identification by CAS Registry Number is fisted for the (+) and (—) enantiomers of /n t-2-methylcyclohexylamine. The 1,4-isomer has a plane of symmetry and hence no chiral centers and no stereoisomers. The methylcyclohexylamine geometric isomers have different physical properties and are interconvertible by dehydrogenation—hydrogenation through the imine. 

The price of tin chemicals depends to a large extent on the fluctuating price of tin. The 1982 prices and the CAS Registry Numbers for selected inorganic tin compounds and organotins are Hsted ia Table 13. 

Chemical Abstract Service Registry Number for a typical example of the sensitizer listed. See Figure 7 for some stmctural formulas. 

Almost all the entries in Chapters 4, 5 and 6 have CAS (Chemical Abstract Service) Registry Numbers to identify them, and these have been entered for each substance. Unlike chemical names which may have more than one synonymous name, there is only one CAS Registry Number for each substance (with only a few exceptions, e.g. where a substance may have another number before purification, or before determination of absolute configuration). To simplify the method for locating the purification of a substance, a CAS Registry Number Index with the respective page numbers has been included after the General Index at the end of the book. This will also provide the reader with a rapid way to see if the purification of a particular... 

Compounds can also be searched for by using the Registry Number, for example.,... 

Some of the rigidly systematic names selected by the Association for Science Education for their nomenclature list in 1985 from the IUPAC possibilities, and some of the systematic indexing names used by Chemical Abstracts since 1972, are given as synonyms in the Index of Chemical Names (Appendix 4). This should assist those coming into industry and research with a command of those nomenclature systems but who may be unfamiliar with the current variety of names used for chemicals. The inclusion where possible of the CAS Registry Number for each title compound should now simplify the clarification of any chemical name or synonym problems, by reference to the Registry Handbook or other CAS source. 

Terpene chemists use trivial names for most of the compounds because the systematic names are much more complex. Common or trivial names, CAS Registry Numbers, and properties of selected terpenes and terpenoids are listed in Tables 2 and 3. Compounds that exhibit chirality also have other Registry Numbers for specific optical isomers. For commercial products, a material safety data sheet (MSDS), which is required by OSHA, frequendy lists multiple names such as a product name, trivial name, IUPAC name and the TSCA name. The MSDS is a good source of information about physical properties, potential health hazards, and other useful information for the safe handling of the materials. When the product is a mixture, the components and their amounts are usually listed along with their Registry Numbers. 

CAS registry number (for each ingredient) and product identification number... 

Within the registry system, each substance is assigned a separate CAS Registry Number. For example, each salt of an acid receives a distinct number, and an ion receives a number different from that of the neutral compound. 

Copolymers of acrylonitrile and methyl methacrylate (115) and terpolymers of acrylonitrile, styrene, and methyl methacrylate (116,117) are used as barrier polymers. Acrylonitrile copolymers and multipolymers containing butyl acrylate (118—121), ethyl acrylate (122), 2-etliylliexyl acrylate (118,121,123,124), liydroxyethyl acrylate (120), vinyl acetate (119,125), vinyl ethers (125,126), and vinylidene chloride (121,122,127—129) are also used in barrier films, laminates, and coatings. Environmentally degradable polymers useful in packaging are prepared from polymerization of acrylonitrile with styrene and methyl vinyl ketone (130). Table 5 gives the structures, formulas, and CAS Registry Numbers for several comonomers of acrylonitrile. 

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