Pentene

Straight chain pentenes
	; 1-Pentene
	; cis-2-Pentene
	; trans-2-Pentene
Names
	IUPAC names Pent-1-ene; cis-Pent-2-ene; trans-Pent-2-ene
	Other names amylene, n-amylene, n-pentene, beta-n-amylene, sym-methylethylethylene
Identifiers
CAS Number	109-67-1 (1-pentene) ; 627-20-3 (cis-2-pentene) ; 646-04-8 (trans-2-pentene) ;
3D model (JSmol)	(1-pentene): Interactive image; (cis-2-pentene): Interactive image; (trans-2-pentene): Interactive image;
ChemSpider	7713 (1-pentene) ; 4483638 (cis-2-pentene) ; 4483639 (trans-2-pentene) ;
ECHA InfoCard	100.042.636
EC Number	246-916-6 (1-pentene); 273-308-8 (cis-2-pentene); 271-255-5 (trans-2-pentene);
PubChem CID	8004 (1-pentene); 5326160 (cis-2-pentene); 5326161 (trans-2-pentene);
UNII	ALP8M0LU81 (1-pentene) ; 54UR3XZ4FC (cis-2-pentene) ; YCO1SJQ98H (trans-2-pentene) ;
CompTox Dashboard (EPA)	DTXSID7026819 ;
	InChI (1-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3H,1,4-5H2,2H3 Key: YWAKXRMUMFPDSH-UHFFFAOYSA-N; (cis-2-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3,5H,4H2,1-2H3/b5-3- Key: QMMOXUPEWRXHJS-HYXAFXHYSA-N; (trans-2-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3,5H,4H2,1-2H3/b5-3+ Key: QMMOXUPEWRXHJS-HWKANZROSA-N;
	SMILES (1-pentene): CCCC=C; (cis-2-pentene): CC/C=C\C; (trans-2-pentene): CC/C=C/C;
Properties
Chemical formula	C5H10
Molar mass	70.135 g·mol−1
Density	0.64 g/cm3 (1-pentene)
Melting point	−165.2 °C (−265.4 °F; 108.0 K) (1-pentene)
Boiling point	30 °C (86 °F; 303 K) (1-pentene)
Magnetic susceptibility (χ)	-53.7·10−6 cm3/mol
Hazards
Safety data sheet (SDS)	MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Pentenes are alkenes with the chemical formula C
₅H
₁₀. Each molecule contains one double bond within its molecular structure. Six different compounds are in this class, differing from each other by whether the carbon atoms are attached linearly or in a branched structure and whether the double bond has a cis or trans form.

^ ^a ^b ^c Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health

[GESTIS-1] Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health

[1]

Names
1-Pentene
cis-2-Pentene
trans-2-Pentene
IUPAC names Pent-1-ene cis-Pent-2-ene trans-Pent-2-ene
Other names amylene, n-amylene, n-pentene, beta-n-amylene, sym-methylethylethylene
Identifiers
CAS Number	109-67-1 (1-pentene)^Y 627-20-3 (cis-2-pentene)^Y 646-04-8 (trans-2-pentene)^Y
3D model (JSmol)	(1-pentene): Interactive image (cis-2-pentene): Interactive image (trans-2-pentene): Interactive image
ChemSpider	7713 (1-pentene)^N 4483638 (cis-2-pentene)^N 4483639 (trans-2-pentene)^N
ECHA InfoCard	100.042.636
EC Number	246-916-6 (1-pentene) 273-308-8 (cis-2-pentene) 271-255-5 (trans-2-pentene)
PubChem CID	8004 (1-pentene) 5326160 (cis-2-pentene) 5326161 (trans-2-pentene)
UNII	ALP8M0LU81 (1-pentene)^Y 54UR3XZ4FC (cis-2-pentene)^Y YCO1SJQ98H (trans-2-pentene)^Y
CompTox Dashboard (EPA)	DTXSID7026819
InChI (1-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3H,1,4-5H2,2H3 Key: YWAKXRMUMFPDSH-UHFFFAOYSA-N (cis-2-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3,5H,4H2,1-2H3/b5-3- Key: QMMOXUPEWRXHJS-HYXAFXHYSA-N (trans-2-pentene): InChI=1S/C5H10/c1-3-5-4-2/h3,5H,4H2,1-2H3/b5-3+ Key: QMMOXUPEWRXHJS-HWKANZROSA-N
SMILES (1-pentene): CCCC=C (cis-2-pentene): CC/C=C\C (trans-2-pentene): CC/C=C/C
Properties
Chemical formula	C₅H₁₀
Molar mass	70.135 g·mol⁻¹
Density	0.64 g/cm³ (1-pentene)^[1]
Melting point	−165.2 °C (−265.4 °F; 108.0 K) (1-pentene)^[1]
Boiling point	30 °C (86 °F; 303 K) (1-pentene)^[1]
Magnetic susceptibility (χ)	-53.7·10⁻⁶ cm³/mol
Hazards
Safety data sheet (SDS)	MSDS
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

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Pentene

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