4,4-Dimethoxytetrahydro-4H-pyran

Also known as: 4,4-Dimethoxyoxane, Tetrahydro-2H-pyran-4-one dimethyl acetal, 4,4-Dimethoxytetrahydro-2H-pyran, 2H-Pyran, tetrahydro-4,4-dimethoxy-, Tetrahydropyran-4-one dimethyl acetal, 4,4-Dimethoxy-tetrahydro-4H-pyran, Tetrahydro-4H-pyran-4-one dimethyl acetal

4,4-Dimethoxytetrahydro-4H-pyran (CAS 28218-71-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C7H14O3 and a molecular weight of 146.18400 g/mol. Key properties include a boiling point of 172ºC at 760 mmHg, a density of 1.042 g/mL at 20ºC(lit.) and a flash point of 53.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 28218-71-5
Jingsj CID: J-1506536-8
Molecular Formula: C₇H₁₄O₃
Molecular Weight: 146.18400 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	172ºC at 760 mmHg
Density	1.042 g/mL at 20ºC(lit.)
Flash Point	53.9ºC
Exact Mass	146.09400
PSA	27.69000
LogP	0.78590
Vapor Pressure	1.81mmHg at 25°C
Refractive Index	1.431

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 4,4-Dimethoxytetrahydro-4H-pyran?

The CAS number of 4,4-Dimethoxytetrahydro-4H-pyran is 28218-71-5.

What are the molecular formula and molecular weight of 4,4-Dimethoxytetrahydro-4H-pyran?

4,4-Dimethoxytetrahydro-4H-pyran has molecular formula C7H14O3 and molecular weight 146.18400 g/mol.

What are the upstream and downstream products of 4,4-Dimethoxytetrahydro-4H-pyran?

For 4,4-Dimethoxytetrahydro-4H-pyran, Upstream Products: Tetrahydro-4H-pyran-4-one, Trimethyl orthoformate, 2H-Pyran-4(3H)-one; Downstream Products: 3-fluorotetrahydro-4H-pyran-4-one, 4-methoxytetrahydro-2H-pyran-4-carbonitrile, 5,6-Dihydro-4-methoxy-2H-pyran.

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. "4,4-Dimethoxytetrahydro-4H-pyran (CAS 28218-71-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506536-8 (accessed 2026-11-09).

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