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2-Pentene, 4-methyl-,(2Z)-

Also known as: 4-Methyl-cis-2-pentene, EINECS 211-616-6, MFCD00065138

2-Pentene, 4-methyl-,(2Z)- (CAS 691-38-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H12 and a molecular weight of 84.15950 g/mol. Key properties include a melting point of -134.4ºC, a boiling point of 57-58ºC(lit.), a density of 0.686 g/mL at 20ºC(lit.) and a flash point of -33.3 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
691-38-3
Jingsj CID
J-1990129-2
Molecular Formula
C6H12
Molecular Weight
84.15950 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/2/2026
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Physicochemical Properties

Melting Point-134.4ºC
Boiling Point57-58ºC(lit.)
Density0.686 g/mL at 20ºC(lit.)
Flash Point-33.3 °C
Exact Mass84.09390
LogP2.21850
Vapor Pressure399 mm Hg ( 37.7 °C)
Refractive Indexn20/D 1.392

Customs & Trade Information

HS Code2901299090
Summary2901299090 unsaturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Pentene, 4-methyl-,(2Z)-?

The CAS number of 2-Pentene, 4-methyl-,(2Z)- is 691-38-3.

What are the molecular formula and molecular weight of 2-Pentene, 4-methyl-,(2Z)-?

2-Pentene, 4-methyl-,(2Z)- has molecular formula C6H12 and molecular weight 84.15950 g/mol.

What are the upstream and downstream products of 2-Pentene, 4-methyl-,(2Z)-?

For 2-Pentene, 4-methyl-,(2Z)-, Upstream Products: 4-Methyl-2-pentanol, 1-hexene, 1-Hexanol; Downstream Products: 4-Methyl-2-pentanol, 2-Methyl-3-pentanol, 2,4-dimethylpentane.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Pentene, 4-methyl-,(2Z)- (CAS 691-38-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990129-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.