Misplaced Pages

#204795

26-470: OCP may refer to: Arts and entertainment [ edit ] OCP (film) , a 2013 performance video project Omni Consumer Products, a fictional corporation in RoboCop Omni Consumer Products (company) , a manufacturer of film-inspired items (founded 2006) Opera Company of Philadelphia (founded 1975) Oregon Catholic Press ,

52-504: A North London warehouse over three months preceding the film shoot completed in two days. The score was composed by Mitch Stratten (also known as Nodern ) and mastered by Denis Blackham in the Isle of Skye . The ambitious project had a modest budget of GBP 24,000 based on its IMDb entry. OCP was first released on the Sedition distribution platform curated online. The reception to OCP

78-498: A nucleophilic compound. The Wurtz reaction reductively couples two alkyl halides to couple with sodium . Some organochlorides (such as ethyl chloride ) may be used as alkylating agents . Tetraethyllead was produced from ethyl chloride and a sodium – lead alloy : Reductive dechlorination is rarely useful in chemical synthesis, but is a key step in the biodegradation of several organochlorine persistent pollutants . The largest application of organochlorine chemistry

104-539: A biomineral precursor chemical OCP Group , a Moroccan phosphate mining/processing company Optimal Control Problem, in applied mathematics and engineering Organochlorine pesticides , a family of organochlorine compounds to which the DDT insecticide belongs Other uses [ edit ] Ocean Park station , an MTR station in Hong Kong Ochre Coloured Pottery culture , a Bronze Age culture in

130-498: A design for scale-out data centers Open Core Protocol Order code processor , the central processing unit in ICL 2900 and other computers Computer software [ edit ] See also: § Linguistic science Open/closed principle Open Container Project , application containers for ease of portability OpenShift Container Platform , an on-premises version of OpenShift from Red Hat Oracle Certified Professional ,

156-558: A designation of the Oracle Certification Program Electrical engineering [ edit ] Open circuit potential , in electrochemistry, an electric potential measured at zero net current Overcurrent protection , in power supply Linguistic science [ edit ] Oxford Concordance Program Obligatory Contour Principle , a principle of phonological theory Other uses in science and technology [ edit ] Octacalcium phosphate ,

182-407: A global effort to control the disease onchocerciasis Oral contraceptive pill , in birth control Orange Carotenoid Protein , involved in photoprotection against light stress in diverse cyanobacteria Overall coagulation potential , a parameter of the overall hemostasis potential test Computer hardware [ edit ] See also: § Electrical engineering Open Compute Project ,

208-504: A piece of equipment used in the mining industry that turns the asymmetrical flow of liquid in pipes symmetrical to monitor performance. Organochlorine chemistry#Pesticides Organochlorides such as trichloroethylene , tetrachloroethylene , dichloromethane and chloroform are commonly used as solvents and are referred to as "chlorinated solvents". Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to

234-608: A publisher of liturgical music (founded 1922) Outside Context Problem , a concept in Iain M. Banks's The Culture novels Portuguese Chamber Orchestra (founded 2007) Military and politics [ edit ] Official Community Plan , of Canadian municipalities One-child policy , of China Operational Camouflage Pattern , of the U.S. military Science and technology [ edit ] Biology and medicine [ edit ] Ocular cicatricial pemphigoid or mucous membrane pemphigoid Onchocerciasis Control Programme,

260-455: Is burned in the presence of chlorine, are persistent organic pollutants which pose dangers when they are released into the environment, as are some insecticides (such as DDT ). For example, DDT, which was widely used to control insects in the mid-20th century, also accumulates in food chains, as do its metabolites DDE and DDD , and causes reproductive problems (e.g., eggshell thinning) in certain bird species. DDT also posed further issues to

286-462: Is dichloromethane, which is mainly used as a solvent. Chloromethane is a precursor to chlorosilanes and silicones . Historically significant (as an anaesthetic), but smaller in scale is chloroform, mainly a precursor to chlorodifluoromethane (CHClF 2 ) and tetrafluoroethene which is used in the manufacture of Teflon. The two main groups of organochlorine insecticides are the DDT -type compounds and

SECTION 10

#1732848721205

312-439: Is different from Wikidata All article disambiguation pages All disambiguation pages OCP (film) OCP is a 2013 video artwork by Mitch Stratten . The performance taking place inside an elaborate three tonne moving set allowed a puppeteer to synchronise the space with the unpredictable movement of the three characters contained from one button. Engineering, construction and testing took place in

338-411: Is no longer a subject of research for potential therapeutic uses. The frogs obtain epibatidine through their diet which is then sequestered into their skin. Likely dietary sources are beetles, ants, mites, and flies. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control. Aryl chlorides may be prepared by

364-1019: Is the production of vinyl chloride . The annual production in 1985 was around 13 million tons, almost all of which was converted into polyvinylchloride (PVC). Most low molecular weight and liquid chlorinated hydrocarbons such as dichloromethane , chloroform , carbon tetrachloride , dichloroethylene , trichloroethylene , tetrachloroethylene , 1,2-Dichloroethane and hexachlorobutadiene are useful solvents. These solvents tend to be relatively non-polar ; they are therefore immiscible with water and effective in cleaning applications such as degreasing and dry cleaning for their ability to dissolve oils and grease . They are mostly nonflammable or have very low flammability. Some, like carbon tetrachloride and 1,1,1-Trichloroethane have been phased out due to their toxicity or negative environmental impact (ozone depletion by 1,1,1-Trichloroethane). Several billion kilograms of chlorinated methanes are produced annually, mainly by chlorination of methane: The most important

390-516: The Friedel-Crafts halogenation , using chlorine and a Lewis acid catalyst. The haloform reaction , using chlorine and sodium hydroxide , is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus. Chlorine adds to the multiple bonds on alkenes and alkynes as well, giving di- or tetra-chloro compounds. Alkenes react with hydrogen chloride (HCl) to give alkyl chlorides. For example,

416-467: The Lucas reagent , this mixture was once used in qualitative organic analysis for classifying alcohols. Alkyl chlorides are most easily prepared by treating alcohols with thionyl chloride (SOCl 2 ) or phosphorus pentachloride (PCl 5 ), but also commonly with sulfuryl chloride (SO 2 Cl 2 ) and phosphorus trichloride (PCl 3 ): In the laboratory, thionyl chloride is especially convenient, because

442-686: The Williamson ether synthesis ; reaction with thiols give thioethers . Alkyl chlorides readily react with amines to give substituted amines . Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction . Reaction with other pseudohalides such as azide , cyanide , and thiocyanate are possible as well. In the presence of a strong base, alkyl chlorides undergo dehydrohalogenation to give alkenes or alkynes . Alkyl chlorides react with magnesium to give Grignard reagents , transforming an electrophilic compound into

468-610: The Yamuna-Ganga region of India See also [ edit ] Open Core Protocol International Partnership Association Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title OCP . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=OCP&oldid=1258769499 " Category : Disambiguation pages Hidden categories: Short description

494-506: The byproducts are gaseous. Alternatively, the Appel reaction can be used: Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles. Heating alkyl halides with sodium hydroxide or water gives alcohols. Reaction with alkoxides or aryloxides give ethers in

520-511: The chlorinated alicyclics . Their mechanism of action differs slightly. Polychlorinated biphenyls (PCBs) were once commonly used electrical insulators and heat transfer agents. Their use has generally been phased out due to health concerns. PCBs were replaced by polybrominated diphenyl ethers (PBDEs), which bring similar toxicity and bioaccumulation concerns. Some types of organochlorides have significant toxicity to plants or animals, including humans. Dioxins, produced when organic matter

546-548: The environment as it is extremely mobile, traces even being found in Antarctica despite the chemical never being used there. Some organochlorine compounds, such as sulfur mustards , nitrogen mustards , and Lewisite , are even used as chemical weapons due to their toxicity. However, the presence of chlorine in an organic compound does not ensure toxicity. Some organochlorides are considered safe enough for consumption in foods and medicines. For example, peas and broad beans contain

SECTION 20

#1732848721205

572-680: The high temperature environment of forest fires and have been found in the preserved ashes of lightning-ignited fires that predate synthetic dioxins. In addition, a variety of simple chlorinated hydrocarbons including dichloromethane , chloroform , and carbon tetrachloride have been isolated from marine algae. A majority of the chloromethane in the environment is produced naturally by biological decomposition, forest fires, and volcanoes. The natural organochloride epibatidine , an alkaloid isolated from tree frogs, has potent analgesic effects and has stimulated research into new pain medication. However, because of its unacceptable therapeutic index , it

598-742: The higher atomic weight of chlorine versus hydrogen. They have higher boiling and melting points compared to related hydrocarbons. Flammability reduces with increased chlorine substitution in hydrocarbons. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group , which can result in cellular damage. Many organochlorine compounds have been isolated from natural sources ranging from bacteria to humans. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids , terpenes , amino acids , flavonoids , steroids , and fatty acids . Dioxins , which are of particular concern to human and environmental health, are produced in

624-416: The industrial production of chloroethane proceeds by the reaction of ethylene with HCl: In oxychlorination , hydrogen chloride instead of the more expensive chlorine is used for the same purpose: Secondary and tertiary alcohols react with hydrogen chloride to give the corresponding chlorides. In the laboratory, the related reaction involving zinc chloride in concentrated hydrochloric acid : Called

650-439: The natural chlorinated plant hormone 4-chloroindole-3-acetic acid (4-Cl-IAA); and the sweetener sucralose (Splenda) is widely used in diet products. As of 2004 , at least 165 organochlorides had been approved worldwide for use as pharmaceutical drugs, including the natural antibiotic vancomycin , the antihistamine loratadine (Claritin), the antidepressant sertraline (Zoloft), the anti-epileptic lamotrigine (Lamictal), and

676-456: Was positive and polarised with critical reviews from “an imaginative feat” to “brave beyond definition” and “genius”. OCP has been shown by art institutions globally including Museo Nacional de Colombia , Wexner Center for the Arts Ohio and EYE film-museum Amsterdam . The work integrates ideas on language and folklore . OCP is the abbreviation for orifice conditioning plate ,

#204795