Tetraethylmethane

Tetraethylmethane is a branched alkane with 9 carbon atoms. It is a highly flammable and volatile liquid at room temperature. It is one of the isomers of nonane. It is considered one of the most controversial alkanes due to its structural resemblance to the swastika.

Tetraethylmethane

Ball and stick model of tetraethylmethane Spacefill model of tetraethylmethane
Names
Preferred IUPAC name 3,3-Diethylpentane
Identifiers
CAS Number	1067-20-5 Y
3D model (JSmol)	Interactive image
ChemSpider	13402 Y
ECHA InfoCard	100.151.290
PubChem CID	14020
UNII	K2SWY952L9 Y
CompTox Dashboard (EPA)	DTXSID1073941
InChI InChI=1S/C9H20/c1-5-9(6-2,7-3)8-4/h5-8H2,1-4H3 Y Key: BGXXXYLRPIRDHJ-UHFFFAOYSA-N Y
SMILES CCC(CC)(CC)CC
Properties
Chemical formula	C9H20
Molar mass	128.259 g·mol−1
Appearance	Colourless liquid
Odor	Odourless
Density	724 mg mL−1
Melting point	−34 to −30 °C; −29 to −22 °F; 239 to 243 K
Boiling point	145.8 to 146.6 °C; 294.3 to 295.8 °F; 418.9 to 419.7 K
Henry's law constant (kH)	1.5 nmol Pa−1 kg−1
Thermochemistry
Heat capacity (C)	278.2 J K−1 mol−1
Std molar entropy (S⦵298)	333.4 J K−1 mol−1
Std enthalpy of combustion (ΔcH⦵298)	−6.1261–−6.1229 MJ mol−1
Hazards
NFPA 704 (fire diamond)	0 3 0
Related compounds
Related alkanes	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
Related compounds	Tetraethylsilane Tetraethylgermanium Tetraethyltin Tetraethyllead
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

See also

• Neopentane
• Tetraethynylmethane
• Tetramethoxymethane

External links

• Alder, Roger W.; Allen, Paul R.; Hnyk, Drahomír; Rankin, David W. H.; Robertson, Heather E.; Smart, Bruce A.; Gillespie, Ronald J.; Bytheway, Ian (1999). "Molecular Structure of 3,3-Diethylpentane (Tetraethylmethane) in the Gas Phase as Determined by Electron Diffraction and ab Initio Calculations". The Journal of Organic Chemistry. 64 (12): 4226–4232. doi:10.1021/jo981779m.