Editing Cinnamic acid (section)

{{Chembox
|Verifiedfields = changed
|Watchedfields = changed
|verifiedrevid = 476994181
|Name = Cinnamic acid
|ImageFile = Zimtsäure - Cinnamic acid.svg
|ImageName = Skeletal formula of trans-cinnamic acid
|ImageFile1 = Cinnamic acid 3D ball.png
|ImageName1 = Ball-and-stick model of the trans-cinnamic acid molecule
|ImageFile2 = Cinnamic acid.jpg
|ImageName2 = Sample of the compound cinnamic acid in powder form
|PIN = (2''E'')-3-Phenylprop-2-enoic acid
|SystematicName = Cinnamic acid
|OtherNames = ''trans''-Cinnamic acid<br>Phenylacrylic acid<ref>{{cite EB1911|wstitle=Cinnamic Acid|volume=6|page=376|short=1}}</ref><br>Cinnamylic acid<br>3-Phenylacrylic acid<br />(''E'')-Cinnamic acid<br>Benzenepropenoic acid<br>Isocinnamic acid
|Section1={{Chembox Identifiers
|IUPHAR_ligand = 3203
|ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
|ChemSpiderID = 392447
|ChEMBL_Ref = {{ebicite|correct|EBI}}
|ChEMBL = 27246
|InChI = 1/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6+
|ChEBI_Ref = {{ebicite|correct|EBI}}
|ChEBI = 35697
|SMILES = O=C(O)\C=C\c1ccccc1
|InChIKey = WBYWAXJHAXSJNI-VOTSOKGWBT
|StdInChI_Ref = {{stdinchicite|correct|chemspider}}
|StdInChI = 1S/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6+
|StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
|StdInChIKey = WBYWAXJHAXSJNI-VOTSOKGWSA-N
|CASNo_Ref = {{cascite|correct|CAS}}
|CASNo = 140-10-3
|UNII_Ref = {{fdacite|changed|FDA}}
|UNII = U14A832J8D
|PubChem = 444539
|KEGG_Ref = {{keggcite|correct|kegg}}
|KEGG = C00423
|Gmelin = 3731
|Beilstein = 1905952
|EINECS = 205-398-1
|3DMet = B00108
}}
|Section2={{Chembox Properties
|C=9 | H=8 | O=2
|Appearance = White monoclinic crystals
|Odor = Honey-like<ref name="flavornet.org">{{cite web|url=http://www.flavornet.org/info/140-10-3.html|title=Cinnamic acid|website=flavornet.org}}</ref>
|Solubility = 500 mg/L<ref name="GESTIS-IOSH">{{GESTIS|ZVG=25910}}</ref>
|Density = 1.2475 g/cm<sup>3</sup><ref name="GESTIS-IOSH"/>
|MeltingPtC = 133
|MeltingPt_ref = <ref name="GESTIS-IOSH"/>
|BoilingPtC = 300
|BoilingPt_ref = <ref name="GESTIS-IOSH"/>
|pKa = 4.44
|MagSus = {{val|-7.836e-5|u=cm<sup>3</sup>/mol}}
}}
|Section3={{Chembox Hazards
|NFPA-H = 1
|NFPA-F = 1
|NFPA-R = 0
|GHSPictograms = {{GHS07}}
|GHSSignalWord = Warning
|HPhrases = {{H-phrases|315|319|335}}
|PPhrases = {{P-phrases|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|403+233|405|501}}
|FlashPt = >
|FlashPtC = 100
|FlashPt_ref = <ref name="GESTIS-IOSH"/>
}}
|Section4={{Chembox Related
|OtherCompounds = [[Benzoic acid]], [[Phenylacetic acid]], [[Phenylpropanoic acid]]
}}
}}

'''Cinnamic acid''' is an [[organic compound]] with the formula [[phenyl|C<sub>6</sub>H<sub>5</sub>]]-CH=CH-[[Carboxylic acid|COOH]]. It is a white crystalline compound that is slightly [[soluble]] in water, and freely soluble in many organic solvents.<ref name="Merck-1996"/> Classified as an unsaturated [[carboxylic acid]], it occurs naturally in a number of plants. It exists as both a [[Cis–trans isomerism|''cis'' and a ''trans'' isomer]], although the latter is more common.<ref name="Garbe-2012"/>