| 释义 |
butylated, a. Chem.
Brit. |ˈbjuːtɪleɪtɪd|, |ˈbjuːtlˌeɪtɪd|, |ˈbjuːtʌɪleɪtɪd|, U.S. |ˈbjudlˌeɪdɪd|
[‹ butyl n. + -ated suffix.]
Of a compound or material: containing one or more added butyl groups.
The butyl groups may be n-butyl (unbranched), isobutyl (methylpropyl), or tert-butyl (dimethylethyl).
1923Jrnl. Amer. Chem. Soc. 45 1819 Butylated urea.—A solution of 8 g. of n-butylamine and 3.3 g. of urea in 50 cc. of water was refluxed for 2½ hours. 1964J. A. Wordingham & P. Reboul Dict. Plastics 28 Butylated resins, resins in which the butyl radical plays an essential part. 1992Analyt. Chem. 64 160/1 Butylated alkyltin standards were prepared similarly. 2005Atmospheric Environment 39 6039/1 The butylated compounds were analyzed solely for determining the concentration of oxalic acid.
Special uses. butylated hydroxyanisole n. a mixture of two isomeric phenolic compounds used as an antioxidant in foods, cosmetics, and pharmaceuticals that contain fats and oils; abbreviated BHA.
The compounds are tert-butyl (dimethylethyl) derivatives of anisole. Chemical formula C11H16O2.
1949Jrnl. Amer. Oil Chemists Soc. 26 449/1 *Butylated hydroxyanisole and certain mixtures of compounds containing it more nearly meet the requirements of an ideal antioxidant. 1981Assessm. Technol. for Determining Cancer Risks from Environm. (U.S. Office Technol. Assessm.) iii. 83/2 It has been postulated that its [sc. BHT's] use—and perhaps that of the more widely used butylated hydroxyanisole—have contributed to the decline in mortality from stomach cancer. 2000M. Long Psychol. Educ. x. 261 The diet he recommended, which is still in current use, involves exclusion of..antioxidant preservatives, in particular butylated hydroxyanisole.
butylated hydroxytoluene n. a phenolic compound used as an antioxidant in petroleum products, and in foods, cosmetics, and pharmaceuticals that contain fats and oils; abbreviated BHT.
The molecule contains two tert-butyl (dimethylethyl) groups. Chemical formula: C15H24O.
1956Jrnl. Agric. & Food Chem. 4 667/2 Eastman Chemical Products has applied to the FDA for approval of BTH (*Butylated hydroxytoluene) as a food grade antioxidant. 1994Independent on Sunday 20 Mar. (Rev. Suppl.) 61/3 Butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) are used to prevent fats and oils from going rancid. 2001C. A. Roberts Food Safety Information Handbk. iii. 81 The FDA approves use of BHT (butylated hydroxytoluene), a synthetic antioxidant used to delay rancidity. |