2-(Hydroxymethylene)cyclopentanone

Also known as: 2-Formylcyclopentanone, Cyclopentanone, 2-(hydroxymethylene)-, 2-Hydroxymethylenecyclopentanone

2-(Hydroxymethylene)cyclopentanone (CAS 930-91-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H8O2 and a molecular weight of 112.127 g/mol. Key properties include a boiling point of 259.8±19.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 107.7±14.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 930-91-6
Jingsj CID: J-1077548-1
Molecular Formula: C₆H₈O₂
Molecular Weight: 112.127 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	259.8±19.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	107.7±14.1 °C
Exact Mass	112.052429
PSA	37.30000
LogP	-0.14
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.522

Customs & Trade Information

HS Code	2914400090
Summary	2914400090 other ketone-alcohols and ketone-aldehydes。Supervision conditions:None。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 2-(Hydroxymethylene)cyclopentanone?

The CAS number of 2-(Hydroxymethylene)cyclopentanone is 930-91-6.

What are the molecular formula and molecular weight of 2-(Hydroxymethylene)cyclopentanone?

2-(Hydroxymethylene)cyclopentanone has molecular formula C6H8O2 and molecular weight 112.127 g/mol.

What are the upstream and downstream products of 2-(Hydroxymethylene)cyclopentanone?

For 2-(Hydroxymethylene)cyclopentanone, Upstream Products: Cyclopentanone, Ethyl formate, 1-Morpholino-1-cyclopentene; Downstream Products: 1-Cyclopentene-1-carbaldehyde, 2-Chloro-6,7-dihydro-5H-cyclopenta[b]pyridine, 2-Acetylcyclopentanone.

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. "2-(Hydroxymethylene)cyclopentanone (CAS 930-91-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1077548-1 (accessed 2026-11-09).

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