| 词条 | Orthoformic acid |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 476994446 | ImageFile = Methanetriol.svg | ImageFile_Ref = {{Chemboximage|correct|??}} | ImageSize = 121 | ImageName = Stereo skeletal formula of orthoformic acid | IUPACName = Orthoformic acid | SystematicName = Methanetriol[1] | OtherNames = Trihydroxymethane |Section1={{Chembox Identifiers | CASNo = 463-78-5 | CASNo_Ref = {{cascite|changed|??}} | PubChem = 5231666 | ChemSpiderID = 4401409 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | SMILES = OC(O)O | StdInChI = 1S/CH4O3/c2-1(3)4/h1-4H | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | InChI = 1/CH4O3/c2-1(3)4/h1-4H | StdInChIKey = RLAHWVDQYNDAGG-UHFFFAOYSA-N | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | InChIKey = RLAHWVDQYNDAGG-UHFFFAOYAS }} |Section2={{Chembox Properties | C=1 | H=4 | O=3 }} }}Not to be confused with methanethiol. Orthoformic acid or methanetriol is a hypothetical compound with the formula HC(OH)3. In this molecule, the central carbon atom is bound to one hydrogen and three hydroxyl groups. Orthoformic acid has not been isolated to date, and is believed to be unstable, decomposing into water and formic acid.[2] EstersMethanetriol esters, known as orthoformates, are well known and commercially available.[3][4] Like acetals, they are stable towards bases but easily hydrolyzed in acidic conditions to the alcohol and an ester of formic acid. They are used as mild dehydrating agent. Especially well known are trimethyl orthoformate, triethyl orthoformate, and triisopropyl orthoformate. See also
References1. ^{{Cite web | last = | first = | title = Methanetriol - PubChem | url = https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5231666&loc=ec_rcs | publisher =NCBI | date = | accessdate = 22 April 2013 }} {{DEFAULTSORT:Orthoformic Acid}}2. ^Böhm, S., Antipova, D. and Kuthan, J. (1996), "Study of methanetriol decomposition mechanisms". International Journal of Quantum Chemistry, volume 60, pages 649–655. {{doi|10.1002/(SICI)1097-461X(1996)60:2<649::AID-QUA3>3.0.CO;2-X}} 3. ^Peter P. T. Sah, Tsu Sheng Ma (1932), ""ESTERS OF ORTHOFORMIC ACID". J. Am. Chem. Soc., volume 54, issue 7, pages 2964–2966 {{doi|10.1021/ja01346a048}} 4. ^H. W. Post (1943), "The Chemistry of the Aliphatic Orthoesters", Reinhold, 188 pages 4 : Organic acids|Dehydrating agents|Orthoesters|Hypothetical chemical compounds |
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