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单词 nitrile
释义

nitrilen.

Brit. /ˈnʌɪtrʌɪl/, /ˈnʌɪtrᵻl/, U.S. /ˈnaɪtrᵻl/, /ˈnaɪˌtraɪl/
Forms: 1800s nitryle, 1800s–1900s nitril, 1800s– nitrile.
Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from German. Etymons: French nitrile; German Nitril.
Etymology: Partly < French nitrile (1849), †nitryle (1848) and partly < German Nitril (1848), both used as generic terms for a class of nitrogenous organic compound with names ending in French -nitrile or its etymon German -nitril (earliest in Benzonitril (H. Fehling 1844, in Ann. der Chem. u. Pharm. 49 96) > French benzonitrile (1844)) < nitr- in Nitrogen nitrogen n. + -il , apparently arbitrary suffix probably influenced by earlier names in -yl : see note below). Compare earlier benzonitrile n. at benzo- comb. form 1, valeronitrile n.In form nitryle in quot. 1848 at sense 1 after French †nitryle (1848 in Comptes Rendus de l'Acad. des Sci. 27 239). This spelling perhaps arises as a result of -ile and -yle being regarded as interchangeable by some French writers; the same source also uses both benzonitryle and benzonytrile . Forms with -yle were perhaps abandoned to prevent further confusion with -yle -yl suffix as used in the names of radicals. It is not clear whether the word arose first in French or German. It appears in German in 1848 ( Ann. der Chem. u. Pharm. 64 331, 332, in reviews perhaps by the editors, F. Wöhler and J. Liebig). The earliest use of the form nitrile so far traced in French is in a letter of the London-based German chemist A. W. Hofmann (1849 in Comptes rendus de l'Acad. des Sci. 29 787; compare quot. 1850 at sense 1), but according to H. Cottez Dict. des structures du vocab. savant (ed. 4, 1985, s.v.) Dumas introduced it in 1847, which would predate the German use mentioned. N.E.D. (1907) gives only the pronunciation (nəi·tril) /ˈnaɪtrɪl/.
1. Chemistry. Any organic compound of the general formula R—C≡N, in which an alkyl or aryl group (R) is directly attached to the carbon atom of a cyanide group; an organic cyanide. Cf. isonitrile n. at iso- comb. form 2b.acrylonitrile, benzonitrile, mandelonitrile, valeronitrile: see the first element.The nitriles were initially interpreted as compounds of a hypothetical nitrogen radical, derived from ammonia by the removal of all three hydrogen atoms: hence Hofmann's term nitrile bases (German Stickstoffbasen) for tertiary amines (see Compounds).
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic radicals > [noun] > radical compounds (general) > radical compounds (named)
paracyanogen1844
nitrile1848
adiponitrile1902
tris1976
1848 Chem. Gaz. 6 449 On the Action of Sulphuretted Hydrogen upon the Nitryles.
1850 A. W. Hofmann in Q. Jrnl. Chem. Soc. 2 331 We may thus distinguish as derived from the ammonia-salts by loss of water: 1. Amides. 2. Nitriles. 3. Amidogen-acids. 4. Imidogen-compounds (Imides).
1871 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxii. 349 Hydrocyanic acid takes up water producing formic acid, so that hydrocyanic is the nitril of formic acid.
1922 G. H. Parker Smell, Taste, & Allied Senses iii. 79 Osmophoric groups are such as the hydroxyl, aldehyde, keton, ester, nitro, and nitril groups.
1957 R. H. Thomson Naturally Occurring Quinones iv. 171 Nordamnacanthal (21) was converted into the nitrile (22) by treatment of the oxime with acetic anhydride.
1983 R. O. C. Norman & D. J. Waddington Mod. Org. Chem. (ed. 4) xiv. 225 Nitriles are reduced to primary amines by sodium and an alcohol.
2001 Speciality Chemicals (Nexis) 1 Sept. 5 The unit can also be utilised to hydrogenate nitriles and saturate olefins or aromatics.
2. Short for nitrile rubber n. at Compounds. Frequently attributive.
ΘΚΠ
society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > synthetic rubber > specific
methyl rubber1919
Thiokol1930
polychloroprene1931
polyisobutylene1931
polybutadiene1935
polyisoprene1935
polysulphide1935
Buna1936
neoprene1937
Perbunan1938
butyl rubber1940
camel-back1942
polyesteramide1943
polydiene1946
nitrile rubber1947
cold rubber1948
SBR1956
Spandex1959
nitrile1983
1983 Machine Design (Nexis) 55 238 The properties of this rubber make it useful for carburetor and fuel-pump diaphragms, aircraft hoses, and gaskets. In many of these applications, the nitriles compete with polysulfides and neoprenes.
1996 Seton Catal. Jan.–July 5 The nitrile coating repels oil and grease.
2001 Ottawa Citizen 18 Oct. c1 Pharmacies are reporting an increase in the sale of latex, vinyl and nitrile gloves.

Compounds

nitrile base n. Chemistry Obsolete (A. W. Hofmann's name for) a compound in which all three hydrogen atoms of an ammonia molecule are replaced by organic radicals; a tertiary amine.
ΚΠ
1850 A. W. Hofmann in Philos. Trans. (Royal Soc.) 140 96 We should arrive at the formation of three classes of organic bases, derived from ammonia by the replacement respectively of 1, 2 or 3 equivalents of hydrogen... Bases of the third class, provisionally called nitrile-bases.
1857 W. A. Miller Elements Chem. III. 267 Nicotia appears to belong to the class of nitrile bases.
nitrile rubber n. any of several synthetic rubbers which are copolymers of acrylonitrile with butadiene and are used in the manufacture of fuel hoses, containers, adhesives, seals, coatings, etc., in which resistance to oil is required.
ΘΚΠ
society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > synthetic rubber > specific
methyl rubber1919
Thiokol1930
polychloroprene1931
polyisobutylene1931
polybutadiene1935
polyisoprene1935
polysulphide1935
Buna1936
neoprene1937
Perbunan1938
butyl rubber1940
camel-back1942
polyesteramide1943
polydiene1946
nitrile rubber1947
cold rubber1948
SBR1956
Spandex1959
nitrile1983
1947 Mod. Plastics Oct. 91/2 The particular difference between nitrile rubber and the more commonly used Buna-S or GR-S synthetic rubber is the use of acrylonitrile instead of styrene.
1972 Materials & Technol. V. xiv. 481 The first nitrile rubbers were hot polymerized; later on cold rubbers also became available, which are easier to process.
1995 Seton Catal. Autumn–Winter 11 Nitrile rubber soles give resistance to oil, slip, heat (to 300°C), acid and alkali hazards.
This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).
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n.1848
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