:Tetraethylmethane

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| verifiedrevid = 470603894

| ImageFile = Tetraethylmethan.svg

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

| ImageSize = 100

| ImageName = Skeletal formula of tetraethylmethane

| ImageFileL1 = Tetraethylmethane-3D-balls.png

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

| ImageNameL1 = Ball and stick model of tetraethylmethane

| ImageFileR1 = Tetraethylmethane-3D-spacefill.png

| ImageFileR1_Ref = {{chemboximage|correct|??}}

| ImageNameR1 = Spacefill model of tetraethylmethane

| OtherNames = Hitlerane

| PIN = 3,3-Diethylpentane{{Cite web|title=Tetraethylmethane - Compound Summary|url=https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=14020&loc=ec_rcs|work=PubChem Compound|publisher=National Center for Biotechnology Information|accessdate=11 March 2012|location=USA|date=26 March 2005|at=Identification and Related Records}}

| Section1 = {{Chembox Identifiers

| CASNo = 1067-20-5

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

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

| UNII = K2SWY952L9

| PubChem = 14020

| ChemSpiderID = 13402

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

| SMILES = CCC(CC)(CC)CC

| StdInChI = 1S/C9H20/c1-5-9(6-2,7-3)8-4/h5-8H2,1-4H3

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

| StdInChIKey = BGXXXYLRPIRDHJ-UHFFFAOYSA-N

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

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| Section2 = {{Chembox Properties

| C = 9

| H = 20

| Appearance = Colourless liquid

| Odor = Odourless

| Density = 724 mg mL⁻¹

| MeltingPtK = 239 to 243

| BoilingPtK = 418.9 to 419.7

| HenryConstant = 1.5 nmol Pa⁻¹ kg⁻¹

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| Section3 = {{Chembox Thermochemistry

| DeltaHc = −6.1261–−6.1229 MJ mol⁻¹

| Entropy = 333.4 J K⁻¹ mol⁻¹

| HeatCapacity = 278.2 J K⁻¹ mol⁻¹

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| Section4 = {{Chembox Hazards

| NFPA-H = 0

| NFPA-F = 3

| NFPA-R = 0

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| Section5 = {{Chembox Related

| OtherFunction_label = alkanes

| OtherFunction = {{Unbulleted list|Neopentane|2,2-Dimethylbutane|2,3-Dimethylbutane|Triptane|Tetramethylbutane|2,2,4-Trimethylpentane|2,3,3-Trimethylpentane|2,3,4-Trimethylpentane|Tetra-tert-butylmethane|2,3-Dimethylhexane|2,5-Dimethylhexane}}

| OtherCompounds = {{unbulleted list|Tetraethylsilane|Tetraethylgermanium|Tetraethyltin|Tetraethyllead}}

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Tetraethylmethane is a branched alkane with 9 carbon atoms. It is a colorless, highly flammable, and volatile liquid at room temperature. It is one of the isomers of nonane.