3-Ethylpentane

3-Ethylpentane (C₇H₁₆) is a branched saturated hydrocarbon. It is an alkane, and one of the many structural isomers of heptane, consisting of a five carbon chain with a two carbon branch at the middle carbon.

3-Ethylpentane

Skeletal formula of 3-ethylpentane
Ball and stick model of 3-ethylpentane Spacefill model of 3-ethylpentane
Names
Preferred IUPAC name 3-Ethylpentane[1]
Identifiers
CAS Number	617-78-7 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:165737
ChemSpider	11551 Y
ECHA InfoCard	100.009.573
EC Number	210-529-0
PubChem CID	12048
UNII	KN826QW56K Y
CompTox Dashboard (EPA)	DTXSID8073211
InChI InChI=1S/C7H16/c1-4-7(5-2)6-3/h7H,4-6H2,1-3H3 Y Key: AORMDLNPRGXHHL-UHFFFAOYSA-N Y
SMILES CCC(CC)CC
Properties
Chemical formula	C7H16
Molar mass	100.205 g·mol−1
Appearance	Colourless liquid
Odor	Odourless
Density	693.77 mg mL−1
Melting point	−119.0 to −118.5 °C; −182.1 to −181.4 °F; 154.2 to 154.6 K
Boiling point	93.3 to 93.7 °C; 199.8 to 200.6 °F; 366.4 to 366.8 K
Henry's law constant (kH)	3.9 nmol Pa−1 kg−1
Thermochemistry
Heat capacity (C)	219.58 J K−1 mol−1
Std molar entropy (S⦵298)	314.55 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−226.2–−223.8 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−4.8174–−4.8152 MJ mol−1
Hazards
GHS labelling:
Pictograms	[2]
Signal word	Danger
Hazard statements	H225, H304, H315, H336, H410[2]
Related compounds
Related alkanes	Isopentane 2-Methylpentane 3-Methylpentane 2-Methylhexane 3-Methylhexane
Related compounds	2-Ethyl-1-butanol Valnoctamide
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

An example of an alcohol derived from 3-ethylpentane is the tertiary alcohol 3-ethylpentan-3-ol.^[3]