2,9-Dimethyl-5-decyne

2,9-二甲基-5-癸炔

Also known as: 1,2-Diisoamylacetylene, 2 9-DIMETHYL-5-DECYNE 95+%, 2,4,4',5-TETRACHLOROBIPHENYL, 2,9-DIMETHYL-5-DECYNE, 2,9-Dimethyl-5-decyne >, 2,9-Dimethyl-dec-5-in, 2,9-Dimethyldec-5-yne, 2,9-dimethyl-dec-5-yne, 2,9-dimethyldec-5-yne, 5-Decyne, 2,9-dimethyl-, 5-Decyne,2,9-dimethyl, 5-decyne,2,9-dimethyl-, Diisoamylacetylen, RCFYJIGZQAOTFV-UHFFFAOYSA, TIMTEC-BB SBB008771, diisopentylacetylene, dimethyldecyne

2,9-Dimethyl-5-decyne (CAS 19550-56-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H22 and a molecular weight of 166.303 g/mol. It is also known as 1,2-Diisoamylacetylene, 2 9-DIMETHYL-5-DECYNE 95+% and 2,4,4',5-TETRACHLOROBIPHENYL. Key properties include a boiling point of 197.4±8.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 65.2±12.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
19550-56-2
Jingsj CID
J-27195-4
Molecular Formula
C12H22
Chinese Name
2,9-二甲基-5-癸炔
Molecular Weight
166.303 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point197.4±8.0 °C at 760 mmHg
Density0.8±0.1 g/cm3
Flash Point65.2±12.6 °C

Frequently Asked Questions

What is the CAS number of 2,9-Dimethyl-5-decyne?

The CAS number of 2,9-Dimethyl-5-decyne is 19550-56-2.

What are the molecular formula and molecular weight of 2,9-Dimethyl-5-decyne?

2,9-Dimethyl-5-decyne has molecular formula C12H22 and molecular weight 166.303 g/mol.

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

Last updated:

How to cite: Jingsj. "2,9-Dimethyl-5-decyne (CAS 19550-56-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27195-4 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.