perboraten.

Brit.

/pəˈbɔːreɪt/, U.S.

/ˌpərˈbɔrˌeɪt/,

/ˌpɛrˈbɔˌreɪt/

Origin: Formed within English, by derivation. Etymons: per- prefix, borate n.

Etymology: < per- prefix + borate n. Compare French perborate (1880).

Chemistry.

Any of a number of strongly oxidizing derivatives of boric acid containing a peroxo anion, which are usually prepared by the action of hydrogen peroxide on borates; esp. the hydrated sodium salt, a white, crystalline solid widely used as a bleach and as a constituent of washing powders.

ΘΚΠ

the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > borates

boraxc1386

tincal1635

borate1816

perborate1833

1833 Philos. Trans. (Royal Soc.) 123 512 Salts..borax, borate of lead, per-borate of tin; chromate of potassa, [etc.].

1881 Chem. News 14 Jan. 25/2 He [sc. A. Étard] has obtained barium perborate,—Bo₂O₇BaH₄ + H₂O, a white amorphous insoluble salt.

1916 Chem. Abstr. 10 2803 Hereto~fore bleaching with persalts, such as perborate, has been more costly than bleaching with chloride of lime.

1959 Guardian 28 Sept. 3/6 The woollen cardigan..had..changed colour..due to the perborate (a stain-removing bleach) added..to a soap powder.

1994 Independent on Sunday 12 June 4/7 Borax rock mined in Arizona and Turkey is a principal source of sodium perborate, a bleaching agent.

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

单词	perborate
释义	perboraten. Brit. /pəˈbɔːreɪt/, U.S. /ˌpərˈbɔrˌeɪt/, /ˌpɛrˈbɔˌreɪt/ Origin: Formed within English, by derivation. Etymons: per- prefix, borate n. Etymology: < per- prefix + borate n. Compare French perborate (1880). Chemistry. Any of a number of strongly oxidizing derivatives of boric acid containing a peroxo anion, which are usually prepared by the action of hydrogen peroxide on borates; esp. the hydrated sodium salt, a white, crystalline solid widely used as a bleach and as a constituent of washing powders. ΘΚΠ the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > borates boraxc1386 tincal1635 borate1816 perborate1833 1833 Philos. Trans. (Royal Soc.) 123 512 Salts..borax, borate of lead, per-borate of tin; chromate of potassa, [etc.]. 1881 Chem. News 14 Jan. 25/2 He [sc. A. Étard] has obtained barium perborate,—Bo₂O₇BaH₄ + H₂O, a white amorphous insoluble salt. 1916 Chem. Abstr. 10 2803 Hereto~fore bleaching with persalts, such as perborate, has been more costly than bleaching with chloride of lime. 1959 Guardian 28 Sept. 3/6 The woollen cardigan..had..changed colour..due to the perborate (a stain-removing bleach) added..to a soap powder. 1994 Independent on Sunday 12 June 4/7 Borax rock mined in Arizona and Turkey is a principal source of sodium perborate, a bleaching agent. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < n.1833
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