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{{chembox |
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{{chembox |
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| verifiedrevid = 402386394 |
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| Watchedfields = changed |
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| Name = Mesityl oxide |
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| verifiedrevid = 426873209 |
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| ImageFile = Mesityl oxide.png |
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| ImageName = Mesityl oxide |
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| Name = Mesityl oxide |
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| ImageFile_Ref = {{chemboximage|correct|??}} |
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| ImageFile1 = Mesityl-oxide-3D-balls.png |
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| ImageFile2 = Mesityl-oxide-3D-vdW.png |
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| ImageFile = Mesityl oxide.png |
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| ImageName = Mesityl oxide |
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| IUPACName = 4-methylpent-3-en-2-one |
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| ImageFile1 = Mesityl-oxide-3D-balls.png |
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| OtherNames = Mesityl oxide<br />Isobutenyl methyl ketone<br />Methyl isobutenyl ketone<br />Isopropylidene acetone''' |
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| ImageFile2 = Mesityl-oxide-3D-vdW.png |
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| Section1 = {{Chembox Identifiers |
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| PIN = 4-Methylpent-3-en-2-one |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| OtherNames = Mesityl oxide<br />Isobutenyl methyl ketone<br />Methyl isobutenyl ketone<br />Isopropylidene acetone |
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|Section1={{Chembox Identifiers |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 8526 |
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| ChemSpiderID = 8526 |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 141-79-7 |
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| CASNo = 141-79-7 |
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| PubChem = 8858 |
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| SMILES = O=C(\C=C(/C)C)C |
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| EINECS = 205-502-5 |
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| InChI = 1/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3 |
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| RTECS = SB4200000 |
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| ChEBI = 89993 |
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| ChEMBL = 3185916 |
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| DTXSID = DTXSID1029170 |
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| UNNumber = 1229 |
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| UNII = 77LAC84669 |
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| SMILES = O=C(\C=C(/C)C)C |
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| InChI = 1/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3 |
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| RTECS = SB4200000 |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| C=6|H=10|O=1 |
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| C=6 | H=10 | O=1 |
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| Density = 0.858 g/cm³ |
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| Density = 0.858 g/cm<sup>3</sup> |
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| Appearance = Straw-yellow liquid |
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| Appearance = Oily, colorless to light-yellow liquid<ref name=PGCH/> |
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| Odor = peppermint- or honey-like<ref name=PGCH/> |
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| Solubility = Good |
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| Solubility = 3% (20°C)<ref name=PGCH/> |
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| Solvent = other solvents |
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| SolubleOther = Soluble in most organic solvents |
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| Solvent = other solvents |
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| SolubleOther = Soluble in most organic solvents |
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| MeltingPtC = -53 |
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| MeltingPtC = −53 |
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| BoilingPtC = 129.5 |
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| BoilingPtC = 129.5 |
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| Viscosity = |
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| Viscosity = |
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| RefractIndex = 1.442 |
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| RefractIndex = 1.442 |
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| VaporPressure = 9 mmHg (20°C)<ref name=PGCH/> |
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| Section3 = {{Chembox Structure |
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|Section3={{Chembox Structure |
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| Dipole = |
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| Dipole = |
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| Section7 = {{Chembox Hazards |
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|Section7={{Chembox Hazards |
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| ExternalMSDS = |
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| ExternalSDS = |
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| MainHazards = flammable |
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| MainHazards = flammable |
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| FlashPt = {{convert|87|F|C}} |
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| FlashPtF = 87 |
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| FlashPt_ref =<ref name=PGCH/> |
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| RPhrases = {{R10}} {{R20/21/22}} |
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| SPhrases = {{S25}} |
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| GHSPictograms = {{GHS02}}{{GHS07}} |
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| GHSSignalWord = Warning |
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| HPhrases = {{H-phrases|226|302|312|332}} |
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| PPhrases = {{P-phrases|210|233|240|241|242|243|261|264|270|271|280|301+312|302+352|303+361+353|304+312|304+340|312|322|330|363|370+378|403+235|501}} |
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| IDLH = 1400 ppm<ref name=PGCH>{{PGCH|0385}}</ref> |
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| LC50 = 1000 mg/m<sup>3</sup> (rat, 4 hr)<br/>9000 mg/m<sup>3</sup> (rat, 4 hr)<br/>10,000 mg/m<sup>3</sup> (mouse, 2 hr)<br/>2000 mg/m<sup>3</sup> (guinea pig, 7 hr)<ref name=IDLH>{{IDLH|141797|Mesityl oxide}}</ref> |
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| LD50 = 1120 mg/kg (rat, oral)<br/>1000 mg/kg (rabbit, oral)<br/>710 mg/kg (mouse, oral)<ref name=IDLH/> |
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| REL = TWA 10 ppm (40 mg/m<sup>3</sup>)<ref name=PGCH/> |
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| PEL = TWA 25 ppm (100 mg/m<sup>3</sup>)<ref name=PGCH/> |
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| ExploLimits = 1.4–7.2%<ref name=PGCH/> |
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| Section8 = {{Chembox Related |
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|Section8={{Chembox Related |
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| OtherCpds = ]<br />],<br />] |
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| OtherCompounds = ]<br />],<br />] |
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'''Mesityl oxide''' is a ] with the formula CH<sub>3</sub>C(O)CH=C(CH<sub>3</sub>)<sub>2</sub>. This compound is a colorless, volatile ] with a strong ] odor.<ref>'']'', 11th Edition, '''5811'''</ref> |
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'''Mesityl oxide''' is a ] with the formula CH<sub>3</sub>C(O)CH=C(CH<sub>3</sub>)<sub>2</sub>. This compound is a colorless, volatile ] with a honey-like odor.<ref>'']'', 14th Edition</ref> |
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==Synthesis== |
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==Synthesis== |
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It is prepared by the ] of ] to give ], which readily dehydrates to give this compound.<ref>{{OrgSynth | prep=cv1p0345 | title = Mesityl oxide | collvol = 1 | collvolpages = 345 | year = 1941 | author= ] and Neal Tuttle}}</ref> |
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It is prepared by the ] of ] to give ], which readily dehydrates to give this compound.<ref>{{OrgSynth | last1= Conant|first1=J. B.|last2=Tuttle|first2=N. | doi= 10.15227/orgsyn.001.0053| title = Mesityl Oxide | volume= 1 | page = 53 | year = 1921}}</ref><ref name=Ull>{{cite book|doi=10.1002/14356007.a01_079|chapter=Acetone|title=Ullmann's Encyclopedia of Industrial Chemistry|year=2000|last1=Sifniades|first1=Stylianos|last2=Levy|first2=Alan B.|isbn=3527306730}}</ref> |
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] may be formed under the same conditions of mesityl oxide production, by a ]. The yields of mesityl oxide and isophorone may vary according to reaction conditions during synthesis: |
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] and ] may be formed under the same conditions. Isophorone originates via a ]: |
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] is formed by continued aldol condensation: |
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==Uses== |
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==Uses== |
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Mesityl oxide is used as a solvent and in the production of ] by ]: |
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Mesityl oxide is used as a solvent and in the production of ] by ]:<ref name=Ull/> |
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Further hydrogenation gives ] (methyl isobutyl carbinol). |
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] is another established use of mesityl oxide. |
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==References== |
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==References== |
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==External links== |
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==External links== |
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