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Diethyl bis(hydroxymethyl)malonate

Also known as: diethyl 2,2-bis(hydroxymethyl)propanedioate, 2,2-Bis(hydroxymethyl)malonic acid diethyl ester, Diethyl 2,2-bis(hydroxymethyl)malonate, Propanedioic acid, 2,2-bis(hydroxymethyl)-, diethyl ester, diethyl 2,2-bis(hydroxymethyl)propane-1,3-dioate, diethyl bis-hydroxymethylmalonate

Diethyl bis(hydroxymethyl)malonate (CAS 20605-01-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H16O6 and a molecular weight of 220.220 g/mol. Key properties include a melting point of 49-51 °C(lit.), a boiling point of 351.3±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 134.5±20.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20605-01-0
Jingsj CID
J-45483-1
Molecular Formula
C9H16O6
Molecular Weight
220.220 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point49-51 °C(lit.)
Boiling Point351.3±37.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point134.5±20.0 °C
Exact Mass220.094681
PSA93.06000
LogP-0.39
Vapor Pressure0.0±1.7 mmHg at 25°C
Refractive Index1.474

Customs & Trade Information

HS Code2918199090
Summary2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Diethyl bis(hydroxymethyl)malonate?

The CAS number of Diethyl bis(hydroxymethyl)malonate is 20605-01-0.

What are the molecular formula and molecular weight of Diethyl bis(hydroxymethyl)malonate?

Diethyl bis(hydroxymethyl)malonate has molecular formula C9H16O6 and molecular weight 220.220 g/mol.

What are the upstream and downstream products of Diethyl bis(hydroxymethyl)malonate?

For Diethyl bis(hydroxymethyl)malonate, Upstream Products: Formaldehyde, Diethyl malonate, Carbon tetrachloride; Downstream Products: Methyl 2-(bromomethyl)acrylate, Formaldehyde, Ethanol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Diethyl bis(hydroxymethyl)malonate (CAS 20605-01-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45483-1 (accessed 2026-11-09).

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