4-Octyne

Also known as: 1,2-DIPROPYLACETYLENE, 1,2-Dipropylacetylene, 4-0ctyene, 4-OCTYNE, 4-OCTYNE, 99%4-OCTYNE, 99%4-OCTYNE, 99%4-OCTYNE, 99%, DIPROPYLACETYLENE, Di-n-propylacetylene, Dipropylacetylene, EINECS 217-730-2, MFCD00009471, Oct-4-yne, hepta-4-yne, n-C3H7CequivCC3H7, oct-4-yne

4-Octyne (CAS 1942-45-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H14 and a molecular weight of 110.197 g/mol. Key properties include a melting point of -103 °C, a boiling point of 131.5±0.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 29.4±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1942-45-6
Jingsj CID: J-44655-4
Molecular Formula: C₈H₁₄
Molecular Weight: 110.197 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-103 °C
Boiling Point	131.5±0.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	29.4±0.0 °C
Exact Mass	110.109550
LogP	3.59
Vapor Pressure	11.3±0.1 mmHg at 25°C
Refractive Index	1.429

Customs & Trade Information

HS Code	2901299090
Summary	2901299090 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 4-Octyne?

The CAS number of 4-Octyne is 1942-45-6.

What are the molecular formula and molecular weight of 4-Octyne?

4-Octyne has molecular formula C8H14 and molecular weight 110.197 g/mol.

What are the upstream and downstream products of 4-Octyne?

For 4-Octyne, Upstream Products: 4-Nonyne, 4-Octene, (4E)-, 1-bromopropane; Downstream Products: Cyclopentanecarboxylic acid, Butyroin, 4,5-Octanedione.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Octyne (CAS 1942-45-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44655-4 (accessed 2026-11-07).

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