methanediol
≈ 2 min read
Names in other languages
- taமீத்தேன்டையால்
- ΕλληνικάΜεθανοδιόλη
- Englishmethanediol
- FrançaisMéthanediol
- فارسیمتاندیال
- Русскийметандиол
- shMetandiol
- СрпскиMetandiol
- 日本語メタンジオール
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
Methanediol, also known as formaldehyde monohydrate or methylene glycol, is an organic compound with chemical formula . It is the simplest geminal diol. In aqueous solutions it coexists with oligomers (short polymers). The compound is closely related and convertible to the industrially significant derivatives paraformaldehyde ( ), formaldehyde ( ), and 1,3,5-trioxane ( ). Methanediol is a product of the hydration reaction of formaldehyde. The equilibrium constant for hydration is estimated to be 10 3 , predominates in dilute (<0.1%) solution. In more concentrated solutions, it oligomerizes to .
Methanediol, also known as formaldehyde monohydrate or methylene glycol, is an organic compound with chemical formula . It is the simplest geminal diol. In aqueous solutions it coexists with oligomers (short polymers). The compound is closely related and convertible to the industrially significant derivatives paraformaldehyde ( ), formaldehyde ( ), and 1,3,5-trioxane ( ). Methanediol is a product of the hydration reaction of formaldehyde. The equilibrium constant for hydration is estimated to be 10 3 , predominates in dilute (<0.1%) solution. In more concentrated solutions, it oligomerizes to . ==Occurrence== The dianion, methanediolate, is believed to be an intermediate in the crossed Cannizzaro reaction. Gaseous methanediols can be generated by electron irradiation and sublimation of a mixture of methanol and oxygen ices. Methanediol is believed to occur as an intermediate in the decomposition of carbonyl compounds in the atmosphere, and as a product of ozonolysis on these compounds. ==Safety== Methanediol, rather than formaldehyde, is listed as one of the main ingredients of "Brazilian blowout", a hair-straightening formula marketed in the United States. The equilibrium with formaldehyde has caused concern since formaldehyde in hair straighteners is a health hazard. Research funded by the Professional Keratin Smoothing Council (PKSC), an industry association that represents selected manufacturers of professional-use only keratin smoothing products, has disputed the risk. ==See also== Orthoformic acid (methanetriol) Orthocarbonic acid (methanetetrol) ==References==
Text derived from https://en.wikipedia.org/w/index.php?oldid=1359383696 under CC BY-SA 4.0; modifications have been made.