3,3-Dimethyl-2,3-dihydro-1H-inden-1-one

Also known as: 3,3-Dimethyl-1-indanone, 1,1-Dimethyl-3-indanone, 1,1-Dimethyl-1H-indene-3(2H)-one, 3,3-Dimethylindan-1-one, 1-Indanone, 3,3-dimethyl-

3,3-Dimethyl-2,3-dihydro-1H-inden-1-one (CAS 26465-81-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H12O and a molecular weight of 160.212 g/mol. Key properties include a melting point of 189.5°C, a boiling point of 250.8±10.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 100.4±14.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 26465-81-6
Jingsj CID: J-9982-1
Molecular Formula: C₁₁H₁₂O
Molecular Weight: 160.212 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	189.5°C
Boiling Point	250.8±10.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	100.4±14.0 °C
Exact Mass	160.088821
PSA	17.07000
LogP	3.13
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.536

Customs & Trade Information

HS Code	2914399090
Summary	2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3,3-Dimethyl-2,3-dihydro-1H-inden-1-one?

The CAS number of 3,3-Dimethyl-2,3-dihydro-1H-inden-1-one is 26465-81-6.

What are the molecular formula and molecular weight of 3,3-Dimethyl-2,3-dihydro-1H-inden-1-one?

3,3-Dimethyl-2,3-dihydro-1H-inden-1-one has molecular formula C11H12O and molecular weight 160.212 g/mol.

What are the upstream and downstream products of 3,3-Dimethyl-2,3-dihydro-1H-inden-1-one?

For 3,3-Dimethyl-2,3-dihydro-1H-inden-1-one, Upstream Products: 3,3-Dimethylacryloyl chloride, benzene, 3-Methyl-2-butenoic acid; Downstream Products: 1,1,3-trimethylindene, 4,4-Dimethyl-4H-isochromene-1,3-dione, 1H-Indene,1,1-dimethyl-.

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. "3,3-Dimethyl-2,3-dihydro-1H-inden-1-one (CAS 26465-81-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9982-1 (accessed 2026-11-09).

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