6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione

Also known as: Cyclopropyl Meldrum's acid, Cycl-Isopropylidene Cyclopropane-1,1-Dicarboxylate, 1,1-Cyclopropanedicarboxylic acid cyclic isopropylidene ester, Cyclopropane-1,1-dicarboxylic acid cycl-isopropylidene ester, Danishefsky's reagent, 5,7-Dioxaspiro[2.5]octane-4,8-dione, 6,6-dimethyl-

6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione (CAS 5617-70-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H10O4 and a molecular weight of 170.163 g/mol. Key properties include a melting point of 63-65 °C(lit.), a boiling point of 396.8±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 215.9±24.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5617-70-9
Jingsj CID: J-853908-0
Molecular Formula: C₈H₁₀O₄
Molecular Weight: 170.163 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	63-65 °C(lit.)
Boiling Point	396.8±35.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	215.9±24.4 °C
Exact Mass	170.057907
PSA	52.60000
LogP	-1.01
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.502

Customs & Trade Information

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione?

The CAS number of 6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione is 5617-70-9.

What are the molecular formula and molecular weight of 6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione?

6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione has molecular formula C8H10O4 and molecular weight 170.163 g/mol.

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. "6,6-Dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione (CAS 5617-70-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-853908-0 (accessed 2026-11-09).

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