piperonyln.
/pᵻˈpɛrənʌɪl/, /pᵻˈpɛrənɪl/, U.S. /pəˈpɛrəˌnaɪl/, /paɪˈpɛrəˌnaɪl/, /pəˈpɛrən(ə)l/, /paɪˈpɛrən(ə)l/ Chemistry.
The radical or group (OCH2O)H3C6—CH2—, derived from piperonal. Usually attributive.
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the world > matter > chemistry > organic chemistry > aldehydes or alkanals > [adjective] > aldehyde derivatives
piperonyl1871
1871 Jrnl. Chem. Soc. 24 934 The mother-liquor.., evaporated until most of the alcohol is driven off, and exhausted with ether, yields piperonyl alcohol.
1923 W. M. Cumming et al. Systematic Org. Chem. v. 93 Piperonyl acrolein is obtained from piperonal and acetaldehyde.
1966 Jrnl. Agric. & Food Chem. 14 555 The..piperonyl carbamates are exceptionally active carbamate synergists.
2003 Observer 28 Sept. i. 16/1 The drums contained 452 kgs of piperonyl methylketone (PMK), better known as a synthesised derivative of the sassafras tree whose bark is used to make aromatherapy oils.
Compounds
piperonyl butoxide n. a yellow oily liquid, C19H30O5, which is used in insecticides as a synergist for pyrethrins.
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the world > matter > chemistry > organic chemistry > organic chemicals used in industry > [noun] > others
phenylenediamine1860
resorcin1866
furfuryl alcohol1873
chinosol1896
microcrystalline wax1943
piperonyl butoxide1945
1945 H. Wachs in Science 16 May 531/1 The activity of piperonyl butoxide (the name given the technical product containing 80 per cent of pure compound) is indicated in Table 1.
1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VII. 142/1 Piperonyl butoxide..and Sesoxane..are two important commercially available pyrethrin synergists.
1995 Org. Gardening Jan. 20/1 In botanicals, the most troublesome ‘inert’ is a chemical additive called PBO (piperonyl butoxide).
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1871