Substance Registry Service

The official version is available for purchase at http //www.ntis.gov. Use the product search function to locate the Inventory. The public Inventory can be partially accessed without charge at the EPA s Substance Registry Service at http //iaspub.epa.gov/sorjnternet/registry/ substreg/home/overview/home.do. Commercial services also sell the Inventory, such as that maintained by the Chemical Abstract Service at http //www.cas.org. 

Id.-, for the Inventory description see the EPA Substance Registry Services Web site at http // iaspub.epa.gov/sor internet/registry/substreg/searchandretrieve/searchbylist/search.do and search the Inventory for CAS 25190-06-1. 

The Substance Registry Service is available at http //iaspub.epa.gov/sor intemet/registry/ substreg/home/overview/home.do. See Chapter 20, Practice Tools for information on using the Substance Registry Service Web site. 

Substance Registry Service, an Internet based registry of chemicals that... 

Agency for Toxic Substance Registry (AFSDR) Toxicological Profile for Sulfur Dioxide, pp 1-185. US Department of ffealth and Human Services, Public Health Service, 1998... 

ATSDR (Agency for Toxic Substances and Disease Registry). 2003. Toxicological Profile for Pyrethrins and Pyrethroids. U.S. Department of Health and Human Service, Public Health Service, Agency for Toxic Substances and Disease Registry Service [online]. Available http //www.atsdr.cdc.gov/toxprofiles/tpl55.html [accessed Jan. 19, 2006]. 

REGISTRY Chemical Abstracts Service (CAS), USA chemical substances struc- ture 22 mio struct., 25 mio sequences 9000 journals, 37 patent offices, proceedings, books STN commerdal CD-ROM, online daily www.cas.OTg... 

Toxicological Profle forMercuy, ATSDR/TP-89/16, Agency for Toxic Substances and Disease Registry, U.S. PubHc Health Service, Adanta, Ga., 1989. 

R. J. Lewis, Sr. and R. L. Tatkin, eds.. Registry of Toxic Effects of Chemical Substances, 8th ed.. National Institute for Occupational Safety and Health, Pubhc Health Service Center for Disease Control, U.S. Government Printing Office, Washington, D.C., 1979. 

In 1990, Chemical Abstracts Service listed over 10 million substances in their Registry. Moreover, the growth of new compounds is exponential, lea ding to a doubling of known chemicals every eleven years. Thus there is an ever increasing need to efficiendy identify substances and quantitate material with high confidence. Hyphenated instmments, combinations of accepted instmmental techniques where the sample is passed from one instmment directiy into another, were developed to aid in solving this problem (1). 

Nitrous Acid, Sodium Salt," in NIOSH Registry ofToxicFffects of Chemical Substances (RTECS), Accession No. RA-1225000, Dept, of Health and Human Services National Institute for Occupational Safety Health (NIOSH), Cincinnati, Ohio, 1979. 

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... 

The world wide facilities for retrieving chemical information provided by the Chemical Abstract Service (CAS on-line) have made it a relatively easy matter to obtain CAS registry numbers of substances, and most of the numbers in this monograph were obtained via CAS on-line. We should point out that two other available useful files are CSCHEM and CSCORP which provide, respectively, information on chemicals (and chemical products) and addresses and telephone numbers of the main branch offices of chemical suppliers. 

CAS Number - Chemical Abstracts Service Registry Number A CAS (Chemical Abstracts Service) Registry Number is a unique identifier that tells you, for example, that aeetone and dimethyl ketone are actually the same substance. The Chemical Abstracts Service is a division of the American Chemical Society. OSHA only requires certain items on an MSDS and a CAS number is not one of them. However, authors of MSDS s are allowed to add additional information, such as the CAS number, if they desire. The numbers you see on trucks on the highway are not CAS Numbers, butU.S. Department of Transportation (DOT) codes, which are not necessarily specific to each chemical. Their aim is to assist emergency responders. 

Chemical Abstracts Service produces the world s largest and most comprehensive databases of chemical information. Principal databases, CHEMICAL ABSTRACTS (CA) and REGISTRY, include nearly 16 million abstracts of chemistry-related literature and patents and more than 30 million substance records respectively. 

CAS = Chemical Abstracts Services DOT/UN/NA/IMCO = Department of Transportation/United Nations/North America/International Maritime Dangerous Goods Code EPA = Environmental Protection Agency HSDB = Hazardous Substance Data Bank NCI = National Cancer Institute NIOSH = National Institute for Occupational Safety and Health OHM/TADS = Oil and Hazardous Materials/Technical Assistance Data System RTECS = Registry of Toxic Effects of Chemical Substances... 

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