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1. The Collaborative International Dictionary of English v.0.48 | ||
Phthalide \Phthal"ide\, n. [Phthalyl + anhydride.] (Chem.) A lactone (C8H6O2) obtained as a white crystalline substance by reduction of phthalyl chloride and other processes; hence, by extension, any one of the series of which phthalide proper is the type. [Written also phthalid.] [1913 Webster] Note: [PJC] 2. Specifically: A fungicide (C8H2Cl4O2) which is a tetrachloro derivative of phthalide[1] proper; in this sense, the spelling fthalide is also used. It has CAS Registry Number 27355-22-2. Syn: Syn. 4,5,6,7-tetrachloro-1(3H)-isobenzofuranone; -- . [PJC] | ||
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