parabenn.

Brit.

/ˈparəbɛn/, U.S.

/ˈpɛrəˌbɛn/

Origin: Formed within English, by derivation. Etymons: para- prefix¹, hydroxybenzoic adj. at hydroxy- comb. form 3.

Etymology: < para- prefix¹ + -ben (in hydroxybenzoic adj. at hydroxy- comb. form 3).

Chemistry.

Any of a group of compounds which are alkyl esters of para-hydroxybenzoic acid and are used as preservatives in pharmaceutical and cosmetic preparations and in the food industry.

ΚΠ

1947 Pharmacopœia U.S. 325 Methylparaben—methyl parahydroxybenzoate.]

1952 Drug Standards 20 92 They are now available to the industry under a variety of trade names including the Parabens (the nomenclature used in the U.S.P. xiv).

1957 Antibiotics & Chemotherapy 7 29 The history of the alkyl esters of para-hydroxybenzoic acid (parabens) as antimicrobial agents dates from 1924.

1973 Nature 2 Feb. 321/1 Preservatives are weak acids whose growth inhibitory effect increases when the pH is lowered from neutrality (except for parabens, with a pK above 8).

2001 Pure Aug.–Sept. 63/1 Research has shown that parabens are oestrogenic..and the effects over a long period of time (as in deodorant use) are unknown.

2002 Food & Chem. Toxicol. 40 1335 Methyl paraben..is a methyl ester of p-hydroxybenzoic acid.

This is a new entry (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paraben
释义	parabenn. Brit. /ˈparəbɛn/, U.S. /ˈpɛrəˌbɛn/ Origin: Formed within English, by derivation. Etymons: para- prefix¹, hydroxybenzoic adj. at hydroxy- comb. form 3. Etymology: < para- prefix¹ + -ben (in hydroxybenzoic adj. at hydroxy- comb. form 3). Chemistry. Any of a group of compounds which are alkyl esters of para-hydroxybenzoic acid and are used as preservatives in pharmaceutical and cosmetic preparations and in the food industry. ΚΠ 1947 Pharmacopœia U.S. 325 Methylparaben—methyl parahydroxybenzoate.] 1952 Drug Standards 20 92 They are now available to the industry under a variety of trade names including the Parabens (the nomenclature used in the U.S.P. xiv). 1957 Antibiotics & Chemotherapy 7 29 The history of the alkyl esters of para-hydroxybenzoic acid (parabens) as antimicrobial agents dates from 1924. 1973 Nature 2 Feb. 321/1 Preservatives are weak acids whose growth inhibitory effect increases when the pH is lowered from neutrality (except for parabens, with a pK above 8). 2001 Pure Aug.–Sept. 63/1 Research has shown that parabens are oestrogenic..and the effects over a long period of time (as in deodorant use) are unknown. 2002 Food & Chem. Toxicol. 40 1335 Methyl paraben..is a methyl ester of p-hydroxybenzoic acid. This is a new entry (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1952
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