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- Dictionaryformaldehyde/fɔːˈmaldɪhʌɪd/
noun
- 1. a colourless pungent gas in solution made by oxidizing methanol.
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noun
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Formaldehyde is an organic compound with the chemical formula CH2O and structure H−CHO, more precisely H2C=O. The compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde. It is stored as aqueous solutions (formalin), which consists mainly of the hydrate CH2(OH)2. It is the simplest of the aldehydes ( R−CHO). As a precursor to many other materials and chemical com... Wikipedia