{0AEA7FA5-98C2-4175-AE3E-E70947456E86} en-US utf8 nonGeographicDataset John Harman U.S. EPA Office of Environmental Information (OEI) harman.john@epa.gov author 2014 ISO 19115 Geographic information - Metadata ISO 19115:2003(E) Substance Identification Information from EPA's Substance Registry 2014 publication 2014 revision John Harman U.S. EPA Office of Environmental Information (OEI) harman.john@epa.gov originator The Substance Registry Services (SRS) is the authoritative resource for basic information about substances of interest to the U.S. EPA and its state and tribal partners. Substances, particularly chemicals, can have many valid synonyms. For example, toluene, methyl benzene, and phenyl methane, are commonly used names for the same chemical. EPA programs collect environmental data for this chemical using each of these names, plus others. This diversity leads to problems when a user is looking for programmatic data for toluene but is unaware that the data is stored under the synonym methyl benzene. For each substance, the SRS identifies the statutes, EPA programs, as well as organization external to EPA, that track or regulate that substance and the synonym used by that statute, EPA program or external organization. Besides standardized information for each chemical, such as the Chemical Abstracts Services name and the Chemical Abstracts Number and the EPA Registry Name (the EPA standard name), the SRS also includes additional information, such as molecular weight and molecular formula. Additionally, an SRS Internal Tracking Number uniquely identifies each substance, enabling cross-walking between synonyms. EPA is providing a large .ZIP file providing the SRS data in CSV format, and a separate small metadata file in XML containing the field names and definitions. John Harman U.S. EPA Office of Environmental Information (OEI) harman.john@epa.gov owner sample biological cas chemical abstracts service business objects chemical chemical identification chemical ID chemical nomenclature code set ITIS Integrated Taxonomic Information System molecular formula molecular weight parameter physical registry registrar register registration sor standard substance substance classification substance identification substance lists substance registry system substance registry services SRS synonym system of registries taxonomic serial number TSN virus web service EPA Environment theme User Environment theme EPA GIS Keyword Thesaurus United States place None Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated. otherRestrictions otherRestrictions https://edg.epa.gov/EPA_Data_License.html public unclassified FIPS Pub 199 Standard Technical Controls en-US environment USA -180 -66 18 72 John Harman U.S. EPA Office of Environmental Information (OEI) harman.john@epa.gov distributor https://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/home.do https information 1 Lineage provided in documentation.