Methacrolein: Difference between revisions

{{short description|Chemical compound}}

| verifiedrevid = 435632264

| Name = Methacrolein

| ImageFileL1_Ref = {{chemboximage|correct|??}}

| ImageNameL1 = Skeletal formula of methacrolein

| ImageFileR1 = Methacrolein-3D-balls-A.png

| ImageNameR1 = Ball-and-stick model of methacrolein

| PIN = 2-Methylprop-2-enal

| OtherNames = Methacrolein<br />Methacrylaldehyde<br />Isobutenal

|Section1={{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 9HRB24892H

| SMILES = O=CC(=C)C

|Section2={{Chembox Properties

| Formula = C₄H₆O

| MolarMass = 70.09 g/mol

| Density = 0.847 g/cm³

| MeltingPtC = −81

| BoilingPtC = 69

|Section3={{Chembox Related

| OtherFunction_label = alkenals

| OtherFunction = [[Citral]]<br />

[[trans-2-Methyl-2-butenal|''trans''-2-Methyl-but-2-enal]]

'''Methacrolein''', or methacrylaldehyde, is an [[Saturated and unsaturated compounds|unsaturated]] [[aldehyde]]. It is a clear, colorless, flammable liquid.

Methacrolein is one of two major products resulting from the reaction of [[isoprene]] with OH in the atmosphere, the other product being [[methyl vinyl ketone]] (MVK, also known as butenone).<ref>{{cite journal | doi = 10.1029/92JD02382 | title = Isoprene and its oxidation products, methyl vinyl ketone and methacrolein, in the rural troposphere | journal = Journal of Geophysical Research: Atmospheres | volume = 98 | issue = D1 | pages = 1101–1111 | year = 1993 | last1 = Montzka | first1 = S. A. | last2 = Trainer | first2 = M. | last3 = Goldan | first3 = P. D. | last4 = Kuster | first4 = W. C. | last5 = Fehsenfeld | first5 = F. C. | bibcode = 1993JGR....98.1101M | url = https://zenodo.org/record/1231331}}</ref> These compounds are important components of the atmospheric oxidation chemistry of biogenic chemicals, which can result in the formation of ozone and/or particulates. Methacrylaldehyde is also present in cigarette smoke.<ref>{{cite book | title=The risks of passive smoking| url=https://books.google.com/books?id=QZcOAAAAQAAJ&pg=PA23 | author=Roy J. Shephard | date=1982 | access-date=2009-05-06| isbn=978-0-7099-2334-3}}</ref> It can be found in the [[essential oil]] of the plant [[Big Sagebrush]] (''Artemisia tridentata'') which contains 5% methacrolein.<ref>{{cite book|author=Shakhnoza, Azimova S.|title=Lipids, Lipophilic Components and Essential Oils from Plant Sources|publisher=Springer|year=2012|isbn=978-0-85729-323-7|page=844|url=https://books.google.com/books?id=w74gD4-YxaQC&pg=PT844|display-authors=etal}}</ref>

* [https://web.archive.org/web/20061012121459/http://www.nj.gov/health/eoh/rtkweb/1198.pdf Hazardous Substance Fact Sheet]

{{Authority control}}

[[Category:Alkenals]]

[[Category:Enones]]