
Metaldehyde is an organic compound with the formula (CH3CHO)4. It is commonly used as a pesticide against slugs, snails, and other gastropods. It is the cyclic tetramer of acetaldehyde. ==Production and properties== Metaldehyde is obtained in moderate yields by treatment of acetaldehyde with various acid catalysts, such as hydrogen bromide. The re...
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http://en.wikipedia.org/wiki/Metaldehyde

• (n.) A white crystalline substance isomeric with, and obtained from, acetic aldehyde by polymerization, and reconvertible into the same.
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http://thinkexist.com/dictionary/meaning/metaldehyde/
Me·tal'de·hyde noun [ Prefix
met- +
aldehyde .]
(Chemistry) A white crystalline substance isomeric with, and obtained from, acetic aldehyde by polymerization, and reconvertible into the same.
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http://www.encyclo.co.uk/webster/M/55

Type: Term Pronunciation: met-al′dĕ-hīd Definitions: 1. A polymer of acetaldehyde.
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http://www.medilexicon.com/medicaldictionary.php?t=54601
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