释义 |
paraffin
par·af·fin P0058000 (păr′ə-fĭn)n.1. A waxy white or colorless solid hydrocarbon mixture used to make candles, wax paper, lubricants, and sealing materials. Also called paraffin wax.2. Chemistry A member of the alkane series.3. Chiefly British Kerosene.tr.v. par·af·fined, par·af·fin·ing, par·af·fins To saturate, impregnate, or coat with paraffin. [German : Latin parum, little, not very; see pau- in Indo-European roots + Latin affīnis, associated with (from its lack of affinity with other materials); see affined.] par′af·fin′ic adj.paraffin (ˈpærəfɪn) or less commonly paraffinen1. (Elements & Compounds) Also called: paraffin oil or kerosene (esp US and Canadian)a liquid mixture consisting mainly of alkane hydrocarbons with boiling points in the range 150°–300°C, used as an aircraft fuel, in domestic heaters, and as a solvent2. (Elements & Compounds) another name for alkane3. (Elements & Compounds) See paraffin wax4. (Elements & Compounds) See liquid paraffinvb (tr) (Elements & Compounds) to treat with paraffin or paraffin wax[C19: from German, from Latin parum too little + affinis adjacent; so called from its chemical inertia]par•af•fin (ˈpær ə fɪn) n. 1. a white or colorless, tasteless, odorless, waxy, solid mixture of alkanes, used esp. in candles and sealing materials. 2. alkane. 3. Also called par′affin oil`. Brit. kerosene. v.t. 4. to cover or impregnate with paraffin. [1830–40; < German < Latin par(um) barely + aff(īnis) connected + German -in -in1; so called from its slight affinity for other substances; see affinity] par·af·fin (păr′ə-fĭn) A waxy, white or colorless solid mixture made from petroleum and used to make candles, wax paper, lubricants, and waterproof coatings.ThesaurusNoun | 1. | paraffin - from crude petroleum; used for candles and for preservative or waterproof coatingsparaffin waxwax - any of various substances of either mineral origin or plant or animal origin; they are solid at normal temperatures and insoluble in water | | 2. | paraffin - a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)alkane, alkane series, methane series, paraffin seriesaliphatic compound - organic compound that is an alkane or alkene or alkyne or their derivativebutane - occurs in natural gas; used in the manufacture of rubber and fuelsamine, aminoalkane - a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicalsC2H6, ethane - a colorless odorless alkane gas used as fuelheptane - a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratingshexane - a colorless flammable liquid alkane derived from petroleum and used as a solventmethane - a colorless odorless gas used as a fuel | | 3. | paraffin - (British usage) kerosineparaffin oilcoal oil, kerosene, kerosine, lamp oil - a flammable hydrocarbon oil used as fuel in lamps and heaters | Translationsparaffin (ˈparəfin) noun (American kerosene) a kind of oil which is used as a fuel. This heater burns paraffin; (also adjective) a paraffin lamp. (美國又稱 kerosene)煤油 煤油,石蜡
paraffin
paraffin, white, more-or-less translucent, odorless, tasteless, waxy solid. It melts between 47°C; and 65°C; and is insoluble in water but soluble in ether, benzene, and certain esters. Paraffin is unaffected by most common chemical reagents but burns readily in air. Obtained from petroleum during refining, it is used in candles, for coating paper, and for various other purposes. Chemically, paraffin is a mixture of high-molecular-weight alkanesalkane , any of a group of aliphatic hydrocarbons whose molecules contain only single bonds (see chemical bond). Alkanes have the general chemical formula CnH2n+2. ..... Click the link for more information. , i.e., saturated hydrocarbonshydrocarbon , any organic compound composed solely of the elements hydrogen and carbon. The hydrocarbons differ both in the total number of carbon and hydrogen atoms in their molecules and in the proportion of hydrogen to carbon. ..... Click the link for more information. with the general formula CnH2n+2, where n is an integer between 22 and 27.Paraffin a petroleum product that consists of a mixture of predominantly straight-chain alkanes that range from nine to 40 carbon atoms in length. Isoparaffin, cycloparaffin, and naphtheno-aromatic hydrocarbons are also found in paraffin. Solid paraffin, which melts between 45° and 70°C, is primarily obtained from oily distillates of paraffin-base petroleum. In this process, the crude mixture of paraffin and oil is dewaxed by crystallization. Paraffin is also extracted from petroleum fractions through the selective adsorption of straight-chain alkanes by zeolites. Liquid paraffin, which boils off between 180° and 360°C, is obtained during the urea dewaxing of certain petroleum products. Commercial paraffin undergoes preliminary adsorbent processing and is then purified by other methods. Because of its chemical neutrality and various other properties, paraffin is widely used in the food industry, in medicine, in the manufacture of cosmetics and perfumes, and as an insulating material in electrical engineering. It also serves as a raw material for the petrochemical industry in the manufacture of such substances as higher fatty acids, higher alcohols, and detergents. Several brands of paraffin are currently available, including fully refined paraffin, semirefined paraffin, and medicinal paraffin. REFERENCEPereverzev, A. N., N. F. Bogdanov, and lu. N. Roshchin. Proizvodstvo parafinov. Moscow, 1973.I. P. LUKASHEVICH paraffin[′par·ə·fən] (materials) alkane paraffin wax paraffin (less commonly), paraffine1. a liquid mixture consisting mainly of alkane hydrocarbons with boiling points in the range 150°--300°C, used as an aircraft fuel, in domestic heaters, and as a solvent 2. another name for alkane3. See paraffin wax4. See liquid paraffinparaffin
paraffin [par´ah-fin] 1. a purified mixture of solid hydrocarbons from petroleum, used for embedding histological specimens and as a stiffening agent in pharmaceutical preparations.2. alkane.liquid paraffin see mineral oil.par·af·fin (par'ă-fin), 1. One of the methane series of acyclic hydrocarbons. 2. Synonym(s): hard paraffin [L. parum, little, + affinis, neighboring, akin, so called because of its slight tendency to chemical reaction] alkane Any of a number of saturated aliphatic (straight-chain) hydrocarbons of the methane series (methane, ethane, propane, butane, pentane, hexane, septane, octane, nonane, decane, etc.), in which the carbons are joined to other carbons by single bonds.hard par·af·fin (hahrd pară-fin) Purified mixture of solid hydrocarbons derived from petroleum. Synonym(s): paraffin (2) . paraffin Related to paraffin: paraffin oil, Liquid paraffin, white soft paraffinSynonyms for paraffinnoun from crude petroleumSynonymsRelated Wordsnoun a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)Synonyms- alkane
- alkane series
- methane series
- paraffin series
Related Words- aliphatic compound
- butane
- amine
- aminoalkane
- C2H6
- ethane
- heptane
- hexane
- methane
noun (British usage) kerosineSynonymsRelated Words- coal oil
- kerosene
- kerosine
- lamp oil
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