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Ethyl Ether
Diethyl ether, or simply ether, is an organic compound in the ether class with the formula (C 2H 5) 2O, Sometimes abbreviated as Et 2O (see Pseudoelement symbols). It is a colorless, highly volatile flammable liquid. It is commonly used as a solvent in laboratories and as a starting fluid for some engines. It was formerly used as a general anesthetic, until non-flammable drugs were developed, such as halothane. It has been used as a recreational drug to cause intoxication.Contents1 Production 2 Uses2.1 Fuel 2.2 Laboratory uses 2.3 Anesthetic use 2.4 Medical use 2.5 Recreational use3 Metabolism 4 Safety and stability 5 History 6 References 7 External linksProduction[edit] Most diethyl ether is produced as a byproduct of the vapor-phase hydration of ethylene to make ethanol
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Chemical Nomenclature
A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC). The IUPAC's rules for naming organic and inorganic compounds are contained in two publications, known as the Blue Book[1] and the Red Book,[2] respectively. A third publication, known as the Green Book,[3] describes the recommendations for the use of symbols for physical quantities (in association with the IUPAP), while a fourth, the Gold Book,[4] contains the definitions of a large number of technical terms used in chemistry. Similar compendia exist for biochemistry[5] (the White Book, in association with the IUBMB), analytical chemistry[6] (the Orange Book), macromolecular chemistry[7] (the Purple Book) and clinical chemistry[8] (the Silver Book)
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R66
R66, R 66 or R-66 can mean: R66 road (South Africa) R66: Repeated exposure may cause skin dryness or cracking, a risk phrase in chemistry Robinson R66, a turboshaft-powered helicopter HDE 268835, a star, also called R66 or R 66 the sole revolving restaurant in Hong Kong, see Hopewell Centre, Hong Kong Route 66 (other) R66 Protocol, an internet file transfer protocolThis disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link
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Standard Enthalpy Change Of Formation
The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states. The standard pressure value po = 105 Pa (= 100 kPa = 1 bar) is recommended by IUPAC, although prior to 1982 the value 1.00 atm (101.325 kPa) was used.[1] There is no standard temperature. Its symbol is ΔfH⊖. The superscript Plimsoll on this symbol indicates that the process has occurred under standard conditions at the specified temperature (usually 25 °C or 298.15 K)
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Standard Enthalpy Change Of Combustion
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it. The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release heat. It may be expressed with the quantities:energy/mole of fuel energy/mass of fuel energy/volume of the fuelThe calorific value is conventionally measured with a bomb calorimeter. It may also be calculated as the difference between the heat of formation ΔHo f of the products and reactants (though this approach is purely empirical since most heats of formation are calculated from measured heats of combustion)
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Anatomical Therapeutic Chemical Classification System
The Anatomical Therapeutic
Therapeutic
Chemical (ATC) Classification System
System
is used for the classification of active ingredients of drugs according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties. It is controlled by the World Health Organization Collaborating Centre for Drug
Drug
Statistics Methodology (WHOCC), and was first published in 1976.[1] This pharmaceutical coding system divides drugs into different groups according to the organ or system on which they act or their therapeutic and chemical characteristics. Each bottom-level ATC code stands for a pharmaceutically used substance, or a combination of substances, in a single indication (or use)
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ATC Code N01
ATC code N01 Anesthetics is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the WHO for the classification of drugs and other medical products. Subgroup N01 is part of the anatomical group N Nervous system.[1] Codes for veterinary use ( ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QN01.[2] ATCvet codes without corresponding human ATC codes are cited with the leading Q in the following list. National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version
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Worker Safety And Health
Occupational safety and health
Occupational safety and health
(OSH), also commonly referred to as occupational health and safety (OHS), occupational health,[1] or workplace health and safety (WHS), is a multidisciplinary field concerned with the safety, health, and welfare of people at work. These terms also refer to the goals of this field,[2] so their use in the sense of this article was originally an abbreviation of occupational safety and health program/department etc. The goals of occupational safety and health programs include to foster a safe and healthy work environment.[3] OSH may also protect co-workers, family members, employers, customers, and many others who might be affected by the workplace environment
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Safety Data Sheet
A safety data sheet (SDS),[1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is an important component of product stewardship, occupational safety and health, and spill-handling procedures. SDS formats can vary from source to source within a country depending on national requirements. SDSs are a widely used system for cataloging information on chemicals, chemical compounds, and chemical mixtures. SDS information may include instructions for the safe use and potential hazards associated with a particular material or product. The SDS should be available for reference in the area where the chemicals are being stored or in use. There is also a duty to properly label substances on the basis of physico-chemical, health or environmental risk
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List Of R-phrases
R-phrases (short for Risk Phrases) are defined in Annex III of European Union
European Union
Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations
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R12
R12, R-12 or R.12 may refer to:In science and academia Dichlorodifluoromethane, also known as Freon-12, a refrigerant and aerosol spray propellant used before 1995 "R12: Extremely flammable", a risk phrase, see List of R-phrasesIn transportation  R12 (New York City Subway car) BMW R12, a motorcycle Renault 12, an automobile produced in France between 1968 and 1980 R12 (Rodalies de Catalunya), a regional rail line in Catalonia, SpainIn military R-12 Dvina, a theatre ballistic missile developed and deployed by the Soviet Union during the Cold War Caudron R.12, an experimental version of the World War I R.11 aircraft HM
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R19
R19 may refer to :R19: May form explosive peroxides, risk phrase in chemistry USS R-19 (SS-96), 1918 R-class coastal and harbor defense submarine of the United States Navy Renault 19
Renault 19
automobile Samsung
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R67
R67 may refer to : R67 road (South Africa) R67: Vapours may cause drowsiness and dizziness, a risk phrase in chemistry BMW R67, a motorcycle HMS Tyrian (R67), a British Royal Navy World War II T-class destroyerThis disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link led you here, you may wish to change the link to point directly to the inten
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Specific Heat Capacity
Heat
Heat
capacity or thermal capacity is a measurable physical quantity equal to the ratio of the heat added to (or removed from) an object to the resulting temperature change.[1] The unit of heat capacity is joule per kelvin J K displaystyle mathrm tfrac J K , or kilogram metre squared per kelvin second squared k g ⋅ m 2 K ⋅ s 2 displaystyle mathrm tfrac kgcdot m^ 2 Kcdot s^ 2 in the International System of Units
International System of Units
(SI). The dimensional form is L2MT−2Θ−1
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List Of S-phrases
S-phrases are defined in Annex IV of European Union
European Union
Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. The list was consolidated and republished in Directive 2001/59/EC, where translations into other EU languages may be found. The list was subsequently updated and republished in Directive 2006/102/EC, where translations to additional European languages were added. These safety phrases are used internationally and not just in Europe, and there is an ongoing effort towards complete international harmonization. (Note: missing S-number combinations indicate phrases that were deleted or replaced by another phrase.)Code PhraseS1 Keep locked upS2 Keep out of the reach of childrenS3 Keep in a cool placeS4 Keep away from living quartersS5 Keep contents under ... (appropriate liquid to be specified by the manufacturer)S6 Keep under ..
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