ethylenediaminen.

Brit.

/ˌɛθᵻliːnˈdʌɪəmiːn/,

/ˌɛθl̩iːnˈdʌɪəmiːn/, U.S.

/ˌɛθəˌlinˈdaɪ(ə)ˌmin/

Origin: Formed within English, by compounding. Etymons: ethylene n., diamine n.

Etymology: < ethylene n. + diamine n.

Chemistry.

A viscous, strongly alkaline liquid with a pungent odour that acts as a chelating agent with metal ions and is widely used as a synthetic reagent in chemical industry.Systematic name: 1,2-diaminoethane; H₂NCH₂CH₂NH₂.

ΚΠ

1860 Proc. Royal Soc. 1859–60 10 496 Those chemists..who have had an opportunity of becoming acquainted with the well-defined properties of ethylenediamine, will not be easily persuaded to consider the uncouth dinitrobenzol-product.

1920 Jrnl. Chem. Soc. 117 1457 Among the compounds which..function as chelate groups are ethylenediamine, [etc.].

1958 E. S. Gilreath Fund. Concepts Inorg. Chem. v. 239 In forming the copper chelate two molecules of ethylenediamine attach themselves to the cupric ion in a caliperlike manner to form two five-membered rings.

2008 Gazette (Essex) (Nexis) 6 Oct. Ethylene diamine, a flammable chemical, was leaking from a 20ft tank container.

Compounds

ethylenediaminetetraacetic acid n. a crystalline acid widely used, esp. in the form of its salts, as a chelating and sequestering agent for metal ions in industry, biology, and medicine; cf. EDTA n. at E n.¹ Initialisms, Versene n.Formula: C₂H₄(N(CH₂COOH)₂)₂.

ΚΠ

1942 Brit. Chem. Abstr. A i. 334 (heading) Copper, nickel, and uranyl compounds of ethylenediaminotetra-acetic acid.]

1946 Brit. Jrnl. Photogr. 5 July 237/1 The ‘Trilon B’ is a water-softener like Calgon and is said to be the di-sodium salt of ethylenediamine tetra-acetic acid.

1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) xxvi. 378 Irrigation with..a solution of the sodium salt of ethylene-diamine tetra-acetic acid..diminishes scarring in lime burns.

2006 Washington Post (Nexis) 10 Apr. b6 Dr. Rubin became an advocate of using the acid EDTA (ethylenediaminetetraacetic acid) as a chelating agent for the treatment of lead poisoning.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

单词	ethylenediamine
释义	ethylenediaminen. Brit. /ˌɛθᵻliːnˈdʌɪəmiːn/, /ˌɛθl̩iːnˈdʌɪəmiːn/, U.S. /ˌɛθəˌlinˈdaɪ(ə)ˌmin/ Origin: Formed within English, by compounding. Etymons: ethylene n., diamine n. Etymology: < ethylene n. + diamine n. Chemistry. A viscous, strongly alkaline liquid with a pungent odour that acts as a chelating agent with metal ions and is widely used as a synthetic reagent in chemical industry.Systematic name: 1,2-diaminoethane; H₂NCH₂CH₂NH₂. ΚΠ 1860 Proc. Royal Soc. 1859–60 10 496 Those chemists..who have had an opportunity of becoming acquainted with the well-defined properties of ethylenediamine, will not be easily persuaded to consider the uncouth dinitrobenzol-product. 1920 Jrnl. Chem. Soc. 117 1457 Among the compounds which..function as chelate groups are ethylenediamine, [etc.]. 1958 E. S. Gilreath Fund. Concepts Inorg. Chem. v. 239 In forming the copper chelate two molecules of ethylenediamine attach themselves to the cupric ion in a caliperlike manner to form two five-membered rings. 2008 Gazette (Essex) (Nexis) 6 Oct. Ethylene diamine, a flammable chemical, was leaking from a 20ft tank container. Compounds ethylenediaminetetraacetic acid n. a crystalline acid widely used, esp. in the form of its salts, as a chelating and sequestering agent for metal ions in industry, biology, and medicine; cf. EDTA n. at E n.¹ Initialisms, Versene n.Formula: C₂H₄(N(CH₂COOH)₂)₂. ΚΠ 1942 Brit. Chem. Abstr. A i. 334 (heading) Copper, nickel, and uranyl compounds of ethylenediaminotetra-acetic acid.] 1946 Brit. Jrnl. Photogr. 5 July 237/1 The ‘Trilon B’ is a water-softener like Calgon and is said to be the di-sodium salt of ethylenediamine tetra-acetic acid. 1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) xxvi. 378 Irrigation with..a solution of the sodium salt of ethylene-diamine tetra-acetic acid..diminishes scarring in lime burns. 2006 Washington Post (Nexis) 10 Apr. b6 Dr. Rubin became an advocate of using the acid EDTA (ethylenediaminetetraacetic acid) as a chelating agent for the treatment of lead poisoning. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < n.1860
随便看	trites tritest tritheism tritheisms tritheist tritheistic tritheistical tritheists tritheite tritheocracy trithing trithing-reeve trithinger trunch-hole trunch-made trunched truncheon truncheon officer truncheon-bearer truncheon-fashion truncheon-sceptre truncheon-snake truncheon-wise truncheonbearer truncheoned