4-methylpent-2-yne-1,4-diol

Also known as: 4-Methyl-2-pentyne-1,4-diol, 2-Pentyne-1,4-diol, 4-methyl-, Ai3-28490, EINECS 234-235-7, 1,1-dimethylbut-2-yn-1,4-diol, 2-Methyl-3-pentyne-2,5-diol, 4-Methyl-pent-2-in-1,4-diol, 4-methyl-2-pentyn-1,4-diol, 4-methyl-pent-2-yne-1,4-diol, Einecs 234-235-7, 4-METHYLPENT-2-YNE-1,4-DIOL

4-methylpent-2-yne-1,4-diol (CAS 10605-66-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H10O2 and a molecular weight of 114.14200 g/mol. Key properties include a boiling point of 205.2ºC at 760mmHg, a density of 1.077g/cm3 and a flash point of 92.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 10605-66-0
Jingsj CID: J-874731-7
Molecular Formula: C₆H₁₀O₂
Molecular Weight: 114.14200 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	205.2ºC at 760mmHg
Density	1.077g/cm3
Flash Point	92.8ºC
Exact Mass	114.06800
PSA	40.46000
Vapor Pressure	0.0603mmHg at 25°C
Refractive Index	1.494

Customs & Trade Information

HS Code	2905399090
Summary	2905399090 other diols。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:5.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-methylpent-2-yne-1,4-diol?

The CAS number of 4-methylpent-2-yne-1,4-diol is 10605-66-0.

What are the molecular formula and molecular weight of 4-methylpent-2-yne-1,4-diol?

4-methylpent-2-yne-1,4-diol has molecular formula C6H10O2 and molecular weight 114.14200 g/mol.

What are the upstream and downstream products of 4-methylpent-2-yne-1,4-diol?

For 4-methylpent-2-yne-1,4-diol, Upstream Products: Formaldehyde, 2-Methyl-3-butyn-2-ol, Ethylmagnesium bromide; Downstream Products: 5,5-Dimethyldihydrofuran-2(3H)-one, 4-methyl-3-penten-1-ol, 2,2-Dimethyltetrahydrofuran.

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-methylpent-2-yne-1,4-diol (CAS 10605-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-874731-7 (accessed 2026-11-09).

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