cyclopentanone

{{chembox

| Verifiedimages = changed

| Watchedfields = changed

| verifiedrevid = 443548992

| Reference=Merck Index, 11th Edition, 2748.

| Name = Cyclopentanone

| ImageFile_Ref = {{chemboximage|correct|??}}

| ImageFileR1 = Cyclopentanone.png

| ImageSizeR1 = 80px

| ImageNameR1 = Cyclopentanone

| ImageFileL1 = Cyclopentanone-3D-balls-by-AHRLS-2012.png

| ImageSizeL1 = 80px

| ImageFile2 = AW Cyclopentanone.jpg

| PIN = Cyclopentanone

| OtherNames = Ketocyclopentane
Adipic ketone

|Section1={{Chembox Identifiers

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

| UNII = 220W81TN3S

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 16486

| SMILES = C1CCC(=O)C1

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

| ChemSpiderID = 8141

| PubChem = 8452

| KEGG_Ref = {{keggcite|correct|kegg}}

| KEGG = C00557

| InChI = 1/C5H8O/c6-5-3-1-2-4-5/h1-4H2

| InChIKey = BGTOWKSIORTVQH-UHFFFAOYAP

| ChEMBL_Ref = {{ebicite|correct|EBI}}

| ChEMBL = 18620

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/C5H8O/c6-5-3-1-2-4-5/h1-4H2

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = BGTOWKSIORTVQH-UHFFFAOYSA-N

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

| CASNo = 120-92-3

| RTECS = GY4725000

}}

|Section2={{Chembox Properties

| Formula = C₅H₈O

| MolarMass = 84.12 g/mol

| Appearance = clear, colorless liquid

| Odor = peppermint-like

| Density = 0.95 g/cm³, liquid

| Solubility = Slightly soluble

| MeltingPtC = -58.2

| BoilingPtC = 130.6

| Viscosity =

| MagSus = −51.63·10⁻⁶ cm³/mol

}}

|Section7={{Chembox Hazards

| MainHazards =

| FlashPtC = 26

| GHSPictograms = {{GHS02}}{{GHS07}}

| GHSSignalWord = WARNING

| HPhrases = {{H-phrases|226|315|319}}

| PPhrases = {{P-phrases|210|302+352|305+351+338}}{{Sigma-Aldrich|sial|id=C112402|name=Cyclopentanone|access-date=2022-03-22}}

| ExternalSDS = [https://archive.org/download/Cyclopentanone-MSDS/PrintMSDSAction.pdf Cyclopentanone]

}}

|Section8={{Chembox Related

| OtherFunction_label = ketones

| OtherFunction = cyclohexanone
2-pentanone
3-pentanone
cyclopentenone

| OtherCompounds = cyclopropane

}}

}}

Cyclopentanone is the organic compound with the formula (CH₂)₄CO. This cyclic ketone is a colorless volatile liquid.