perchloro-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Forms: 1800s– perchlor-, 1800s– perchloro-.

Origin: Formed within English, by derivation. Etymons: per- prefix, chloro- comb. form².

Etymology: < per- prefix + chloro- comb. form².Attested in a small number of formations below and perchloroethylene n. In perchloronaphthalese n. after French perchloronaphtalèse (1835). In perchloroethane n. perhaps after German Perchloräthan (1871 or earlier).

Chemistry.

Forming names of compounds in which there is the maximum possible replacement of hydrogen by chlorine.

perchloracetic adj.

Brit.

/pəˌklɔːrəˈsiːtɪk/

/pəˌklɔːrəˈsɛtɪk/

U.S.

/pərˌklɔrəˈsidɪk/

ΚΠ

1857 W. A. Miller Elements Chem. III. 182 These perchlorinated compound ethers, such as the perchloracetic ether..and perchloroformic ether..are very unstable.

1965 Proc. National Acad. Sci. U.S.A. 54 254 The rate of digestion was measured by..spectrophotometric determination of perchloracetic acid-soluble peptides at 280 mμ.

2001 Diabetes (Nexis) July 1580 It was terminated by the addition of perchloroacetic acid.

† perchloraldehyde n. Obsolete

ΚΠ

1857 W. A. Miller Elements Chem. III. 182 Amongst these products perchloraldehyd..is always present.

1873 F. W. Clarke Constants of Nature i. 197 (table) Perchloraldehyde. C₂Cl₄O. 1.603, 18° 118°.

perchlorbenzene n.

Brit.

/pəˌklɔːˈbɛnziːn/

/pəˌklɔːbɛnˈziːn/

U.S.

/pərˌklɔrˈbɛnˌzin/

/pərˌklɔrˌbɛnˈzin/

ΚΠ

1873 I. Remsen tr. R. Fittig Wöhler's Outl. Org. Chem. 275 When the attempt is made to replace the last hydrogen-atom in toluene, the molecule breaks up, and perchlorbenzene is formed.

2000 Hazardous Materials Managem. Mag. (Nexis) Mar. 16 HCB, perchlorobenzene, esachlorobenzene, pentachlorophenyl chloride and phenyl perchloryl.

perchloroethane n.

Brit.

/pəˌklɔːrəʊˈiːθeɪn/

/pəˌklɒrəʊˈiːθeɪn/

U.S.

/pərˌklɔroʊˈɛˌθeɪn/

ΚΠ

1882 Athenæum 11 Nov. 632/1 Perchlorethane, perchlorbenzene, and nitrogen were obtained.

1992 W. H. Brock Fontana Hist. Chem. vi. 217 Since both oxalic acid and the perchloroethane..actually existed, Berzelius' only hypothesis was that the latter's fastening..to oxalic acid did not affect its acidic properties.

† perchloronaphthalese n. Obsolete rare.

ΚΠ

1836 Rec. Gen. Sci. 3 293 Perchloro-naphthalese.—If, instead of treating the preceding body [sc. chloro-naphthalese] with potash, we distil it, it is partly decomposed, and a portion passes over with an oil. By expressing the product between paper we obtain a pure substance.

† perchloroquinone n. Obsolete

ΚΠ

1857 W. A. Miller Elements Chem. III. 354 Perchlorokinone, chloranile (C₁₂Cl₄O₄)..forms pale yellow flakes of pearly and metallic lustre.

1866 W. Odling Lect. Animal Chem. 123 By treatment with chlorine, all four bodies yield..chloranil C₆Cl₄O₂, or perchloroquinone.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).

单词	perchloro-
释义	perchloro-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: 1800s– perchlor-, 1800s– perchloro-. Origin: Formed within English, by derivation. Etymons: per- prefix, chloro- comb. form². Etymology: < per- prefix + chloro- comb. form².Attested in a small number of formations below and perchloroethylene n. In perchloronaphthalese n. after French perchloronaphtalèse (1835). In perchloroethane n. perhaps after German Perchloräthan (1871 or earlier). Chemistry. Forming names of compounds in which there is the maximum possible replacement of hydrogen by chlorine. perchloracetic adj. Brit. /pəˌklɔːrəˈsiːtɪk/ , /pəˌklɔːrəˈsɛtɪk/ , U.S. /pərˌklɔrəˈsidɪk/ ΚΠ 1857 W. A. Miller Elements Chem. III. 182 These perchlorinated compound ethers, such as the perchloracetic ether..and perchloroformic ether..are very unstable. 1965 Proc. National Acad. Sci. U.S.A. 54 254 The rate of digestion was measured by..spectrophotometric determination of perchloracetic acid-soluble peptides at 280 mμ. 2001 Diabetes (Nexis) July 1580 It was terminated by the addition of perchloroacetic acid. † perchloraldehyde n. Obsolete ΚΠ 1857 W. A. Miller Elements Chem. III. 182 Amongst these products perchloraldehyd..is always present. 1873 F. W. Clarke Constants of Nature i. 197 (table) Perchloraldehyde. C₂Cl₄O. 1.603, 18° 118°. perchlorbenzene n. Brit. /pəˌklɔːˈbɛnziːn/ , /pəˌklɔːbɛnˈziːn/ , U.S. /pərˌklɔrˈbɛnˌzin/ , /pərˌklɔrˌbɛnˈzin/ ΚΠ 1873 I. Remsen tr. R. Fittig Wöhler's Outl. Org. Chem. 275 When the attempt is made to replace the last hydrogen-atom in toluene, the molecule breaks up, and perchlorbenzene is formed. 2000 Hazardous Materials Managem. Mag. (Nexis) Mar. 16 HCB, perchlorobenzene, esachlorobenzene, pentachlorophenyl chloride and phenyl perchloryl. perchloroethane n. Brit. /pəˌklɔːrəʊˈiːθeɪn/ , /pəˌklɒrəʊˈiːθeɪn/ , U.S. /pərˌklɔroʊˈɛˌθeɪn/ ΚΠ 1882 Athenæum 11 Nov. 632/1 Perchlorethane, perchlorbenzene, and nitrogen were obtained. 1992 W. H. Brock Fontana Hist. Chem. vi. 217 Since both oxalic acid and the perchloroethane..actually existed, Berzelius' only hypothesis was that the latter's fastening..to oxalic acid did not affect its acidic properties. † perchloronaphthalese n. Obsolete rare. ΚΠ 1836 Rec. Gen. Sci. 3 293 Perchloro-naphthalese.—If, instead of treating the preceding body [sc. chloro-naphthalese] with potash, we distil it, it is partly decomposed, and a portion passes over with an oil. By expressing the product between paper we obtain a pure substance. † perchloroquinone n. Obsolete ΚΠ 1857 W. A. Miller Elements Chem. III. 354 Perchlorokinone, chloranile (C₁₂Cl₄O₄)..forms pale yellow flakes of pearly and metallic lustre. 1866 W. Odling Lect. Animal Chem. 123 By treatment with chlorine, all four bodies yield..chloranil C₆Cl₄O₂, or perchloroquinone. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < comb. form1836
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