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Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C(CH 2) 5 CH 3 or C 7 H 16. When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane ).
Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... n-Heptane: 3075 mg/m 3: 750 ppm: 142825: 67-72-1: 0051: Hexachloroethane ...
Norbornane (also known as bicyclo[2.2.1]heptane) is an organic compound and a saturated hydrocarbon with chemical formula C 7 H 12. It is a crystalline compound with a melting point of 88 °C . The carbon skeleton is derived from cyclohexane ring with a methylene bridge in the 1,4- position, and is a bridged bicyclic compound.
The Center for Surveillance, Epidemiology and Laboratory Services (CSELS) is a branch of the US Centers for Disease Control and Prevention (CDC) that provides scientific service, expertise, skills, and tools in support of national efforts to promote health; prevent disease, injury and disability; and prepare for emerging health threats. [1]
The parent unsymmetrical member is spiro[2.4]heptane, which features cyclopropyl and cyclopentyl rings sharing one carbon. An early example of a spiro[3.3]heptane is the dicarboxylic acid C[(CH 2 ) 2 CH(CO 2 H)] 2 , also called Fecht's acid in honor of H. Fecht, of the Strasbourg Institute of Chemistry, the person who obtained this compound.
The National Health Care Surveys are used to study resource use, including staffing; quality of care, including patient safety; clinical management of specific conditions; disparities in the use and quality of care; and diffusion of health care technologies, including drugs, surgical procedures, and information technologies.
Heptacene is an organic compound and a polycyclic aromatic hydrocarbon and the seventh member of the acene or polyacene family of linear fused benzene rings. [1] This compound has long been pursued by chemists [2] [3] [4] because of its potential interest in electronic applications and was first synthesized but not cleanly isolated in 2006.
MMWR has its roots in the establishment of the Public Health Service (PHS). On January 3, 1896, the Public Health Service began publishing Public Health Reports.Morbidity and mortality statistics were published in Public Health Reports until January 20, 1950, when they were transferred to a new publication of the PHS National Office of Vital Statistics called the Weekly Morbidity Report.