naphthalene definition
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- Definition of NAPHTHALENE. : a crystalline aromatic hydrocarbon C10H8 usually obtained by distillation of coal tar and used especially in organic synthesis.See naphthalene defined for kids. a crystalline aromatic hydrocarbon C10H8 usually obtained by distillation of coal tar and used especially in organic synthesis. See naphthalene defined for kids.
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nappe nappe. 1  Geology. a large mass of rock thrust a considerable distance along a nearly horizontal fault plane or in an overturned anticlinal fold. 2  Geometry. one of the two equal sections of a cone.
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Naphthalene Naphthalene is made from crude oil or coal tar. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires. It is used as an insecticide and pest repellent.Naphthalene was first registered as a pesticide in the United States in 1948.aphthalene is made from crude oil or coal tar. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires. It is used as an insecticide and pest repellent.
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Phenolphthalein Definition Phenolphthalein Definition: Phenolphthalein is an organic compound often used as an pH indicator. Phenolphthalein turns pink in pH greater than 8.3 and colorless in acidic solutions. The chemical formula for phenolphthalein is C 20 H 14 O 4.henolphthalein Definition: Phenolphthalein is an organic compound often used as an pH indicator. Phenolphthalein turns pink in pH greater than 8.3 and colorless in acidic solutions. The chemical formula for phenolphthalein is C 20 H 14 O 4.
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latex (lā'těks') The colorless or milky sap of certain trees and plants, such as the milkweed and the rubber tree, that hardens when exposed to the air. Latex usually contains gum resins, waxes, and oils, and sometimes toxic substances. A manufactured emulsion of synthetic rubber or plastic droplets in water that resembles the latex of plants. It is used in paints, adhesives, and synthetic rubber products.
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Naphthalene in Indoor Air Naphthalene belongs to a group of chemicals called polycyclic aromatic hydrocarbons. These chemicals are found in fossil fuels and are also formed as by-products of the combustion of biomass and fossil fuels. Naphthalene usually occurs in solid form, but can also be released as a gas to indoor air at room temperature. Most of the exposure to naphthalene occurs though breathing air in the home and other buildings.
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Network Access Protection Network Access Protection. Purpose. Note The Network Access Protection platform is not available starting with Windows 10. Network Access Protection (NAP) is a set of operating system components that provide a platform for protected access to private networks.
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What is the fastest speed a passenger airplane flies at? What is the fastest speed a passenger airplane flies at? up vote 17 down vote favorite How fast does the world's currently fastest passenger plane fly (cruise speed)?
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Toxic Substances Portal - Naphthalene, 1-Methylnapthalene, 2-Methylnapthalene Naphthalene is a white solid that evaporates easily. It is also called mothballs, moth flakes, white tar, and tar camphor. When mixed with air, naphthalene vapors easily burn. Fossil fuels, such as petroleum and coal, naturally contain naphthalene.his public health statement tells you about naphthalene, 1 methylnaphthalene, and 2 methylnaphthalene and the effects of exposure to these chemicals. The Environmental Protection Agency (EPA) identifies the most serious hazardous waste sites in the nation.
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- A carcinogenic and toxic hydrocarbon obtained from coal tar; used for many syntheses in industry and in some moth repellents; naphthalene can cause an attack of hemolytic anemia in people with a deficiency of glucose-6-phosphate dehydrogenase.aph·tha·lene. A carcinogenic and toxic hydrocarbon obtained from coal tar; used for many syntheses in industry and in some moth repellents; naphthalene can cause an attack of hemolytic anemia in people with a deficiency of glucose-6-phosphate dehydrogenase. Synonym(s): naphthalin, tar camphor.
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Polycyclic aromatic hydrocarbon Formally, the class is further defined as lacking further branching substituents on these ring structures. Polynuclear aromatic hydrocarbons (PNAs) are a subset of PAHs that have fused aromatic rings, that is, rings that share one or more sides. The simplest such chemicals are naphthalene, having two aromatic rings, and the three-ring compounds anthracene and phenanthrene.
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- Benzene definition, a colorless, volatile, flammable, toxic, slightly water-soluble, liquid, aromatic compound, C 6 H 6 , obtained chiefly from coal tar: used in the manufacture of commercial and medicinal chemicals, dyes, and as a solvent for resins, fats, or the like. See more.
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SOLVENT Dictionary entry overview: What does naphtha mean? • NAPHTHA (noun) The noun NAPHTHA has 1 sense: 1. any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents Familiarity information: NAPHTHA used as a noun is very rare.
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Definition of napalm Definition of napalm. napalm. verb. to spread a term, idea, concept or style about. Origin: a sticky, flammable substance. When used in bombs, the explosion covers the surrounding area in napalm. Thus when one napalms an idea etc., they cover the area with it. I napalmed the whole staff with my concept.
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Definition of 'asthma' asthma (ˈæsmə ) noun. a respiratory disorder, often of allergic origin, characterized by difficulty in breathing, wheezing, and a sense of constriction in the chest. Word origin of 'asthma'. C14: from Greek: laborious breathing, from azein to breathe hard.
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Penicillinase-Resistant Penicillin Definition (NCI). A semi-synthetic naphthalene and beta-lactam antibiotic with antibacterial activity. Nafcillin inhibits bacterial wall synthesis by a mechanism of action similar to penicillin. Penicillinase-resistant Nafcillin is used to treat infections caused by penicillin-resistant strains of Staphylococci.
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propylene propylene (countable and uncountable, plural propylenes) (organic chemistry) The organic chemical compound propene. An alkene which is a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C3H6.
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petroleum Medical Definition of petroleum. : an oily flammable bituminous liquid that may vary from almost colorless to black, occurs in many places in the upper strata of the earth, is a complex mixture of hydrocarbons with small amounts of other substances, and is prepared for use as gasoline, naphtha, or other products by various refining processes.
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alkyne (āl'kīn') Any of a group of unsaturated hydrocarbons that havee carbon atoms in chains linked by one or more triple bonds and that have the general formula CnH2n-2. Alkynes can be solid, liquid, or gaseous and include acetylene. ◇ The group of alkynes as a whole is called the alkyne series or the acetylene series. The first five members of the alkyne series are acetylene (or ethyne), propyne, butyne, pentyne, and hexyne.
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- Naphtha is the root of the word naphthalene. The second syllable of naphtha can also be recognised in phthalate. It also enters the word napalm from  na phthenic acid and palm itic acid, as the first napalm was made from a mixture of naphthenic acid with aluminium and magnesium salts of palmitic acid. 2nd century BCE Koine Greek religious text uses the word naphtha to refer to a miraculously flammable liquid. The subjects called the liquid nephthar, meaning purification, but note that most people call it naphtha (or Nephi).
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- Making the world better, one answer at a time. Naptha is a common name for the industrial solvent Petroleum Ether. Other names include benzine, X-4, or Lingroin. Chemically, naptha is a mixture of straight chained hydrocarbon-ethers, straight chained alkanes, as well as some aromatic hydrocarbons.The actual composition of the naptha will depend on its boiling point (indicative of the distillation temperature).hemically, naptha is a mixture of straight chained hydrocarbon-ethers, straight chained alkanes, as well as some aromatic hydrocarbons. The actual composition of the naptha will depend on its boiling point (indicative of the distillation temperature).
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- Napalm is jellied gasoline. Its name is an acronym of naphthenic and palmitic acids, which are used in its manufacture.While used in World War II and the Korean War, napalm became notorious in Vietnam where it was used in three capacities.Possibly its most visual use was being dropped from aircraft in large canisters which tumbled sluggishly to earth.apalm is jellied gasoline. Its name is an acronym of naphthenic and palmitic acids, which are used in its manufacture.
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- See also: the underground, underground railroad, Velvet Underground, undergrown. apneic. apneic. adj. without respiratory movements. respiratory pause, respiratory arrest. lunge. lunge. n. the. U.S. avant-garde rock group (1965--70): originally comprised Lou Reed, John Cale (born 1940; bass guitar and viola), Sterling Morrison (1942--95; guitar), and Maureen Tucker (born 1945; drums). Their albums include The Velvet Underground and Nico (1967), White Light/White Heat (1967), and Loaded (1970).
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methane meth·ane. n. An odorless, colorless, flammable gas, CH 4, the major constituent of natural gas, that is used as a fuel and is an important source of hydrogen and a wide variety of organic compounds. (ˈmiːθeɪn).
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Heptane Definition - What does Heptane mean? Heptane is a water-insoluble hydrocarbon obtained by fractional distillation of petroleum characterized by its petrol-like odor and colorless nature. It is used in the manufacturing of paint and coating additives, adhesives, sealants, chemical intermediates and formulation solvents in industrial and consumer use.
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Nap-of-the-earthupdate Nap-of-the-earth (abbreviated NOE) is a type of very low-altitude flight course used by military aircraft to avoid enemy detection and attack in a high-threat environment.