Dimethyl acetylenedicarboxylate

丁炔二酸二甲酯

Also known as: Dimethyl but-2-ynedioate, Acetylenedicarboxylic acid dimethyl ester, 2-Butynedioic acid dimethyl ester, 1,2-Acetylenedicarboxylic acid dimethyl ester, 1,2-Ethynedicarboxylic acid dimethyl ester, Ethyne-1,2-dicarboxylic acid dimethyl ester, Dimethyl 2-butynedioate, Dimethyl But-2-yne-1,4-dioate, DMAD

CAS No.
762-42-5
Jingsj CID
J-3391-6
Molecular Formula
C6H6O4
Chinese Name
丁炔二酸二甲酯
Molecular Weight
142.109 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-18 °C
Boiling Point204.3±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point86.1±0.0 °C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of Dimethyl acetylenedicarboxylate?

762-42-5

What are the molecular formula and molecular weight of Dimethyl acetylenedicarboxylate?

C6H6O4, molecular weight 142.109 g/mol

Is Dimethyl acetylenedicarboxylate hazardous?

Danger

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026