naphthoicadj.

Brit.

/nafˈθəʊɪk/,

/napˈθəʊɪk/, U.S.

/næpˈθoʊɪk/,

/næfˈθoʊɪk/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: naphtha n., -oic comb. form.

Etymology: < naphtha n. + -oic comb. form, after German Naphtoesäure naphthoic acid (V. Merz & H. Mühlhäuser 1870, in Berichte der Deutsch. Chem. Ges. 3 709).

Chemistry.

naphthoic acid n. either of two isomeric acids, C₁₀H₇COOH, derived from naphthalene.

ΚΠ

1870 Nature 1 Sept. 366/1 M. Küchenmeister has obtained two different naphthoic acids corresponding to the two naphthols, by treating the two naphthylsulphates with cyanide of potassium and the cyanides with potash.

1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xxxi. 532 The naphthoic acids, C₁₀H₇·CO₂H, can be obtained by saponifying the cyano-naphthalenes.

1953 A. G. E. Pearse Histochem. ix. 210 The naphthoic acid hydrazide-dianisidine (NAHD) reaction was described as specific for ketosteroids and was employed for this purpose particularly upon frozen sections of adrenal glands.

2000 Jrnl. Analyt. & Appl. Pyrolysis (Electronic ed.) 54 A general reaction pathway for the benzoic and 2-naphthoic acids involves anhydride formation in the absence of water.

This is a new entry (OED Third Edition, June 2003; most recently modified version published online March 2022).

单词	naphthoic
释义	naphthoicadj. Brit. /nafˈθəʊɪk/, /napˈθəʊɪk/, U.S. /næpˈθoʊɪk/, /næfˈθoʊɪk/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: naphtha n., -oic comb. form. Etymology: < naphtha n. + -oic comb. form, after German Naphtoesäure naphthoic acid (V. Merz & H. Mühlhäuser 1870, in Berichte der Deutsch. Chem. Ges. 3 709). Chemistry. naphthoic acid n. either of two isomeric acids, C₁₀H₇COOH, derived from naphthalene. ΚΠ 1870 Nature 1 Sept. 366/1 M. Küchenmeister has obtained two different naphthoic acids corresponding to the two naphthols, by treating the two naphthylsulphates with cyanide of potassium and the cyanides with potash. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xxxi. 532 The naphthoic acids, C₁₀H₇·CO₂H, can be obtained by saponifying the cyano-naphthalenes. 1953 A. G. E. Pearse Histochem. ix. 210 The naphthoic acid hydrazide-dianisidine (NAHD) reaction was described as specific for ketosteroids and was employed for this purpose particularly upon frozen sections of adrenal glands. 2000 Jrnl. Analyt. & Appl. Pyrolysis (Electronic ed.) 54 A general reaction pathway for the benzoic and 2-naphthoic acids involves anhydride formation in the absence of water. This is a new entry (OED Third Edition, June 2003; most recently modified version published online March 2022). < adj.1870
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