Acetylenedicarboxylic acid
丁炔二酸
Also known as: but-2-ynedioic acid, 2-butynedioic acid, butynedioic acid, acetylenedicarboxylate
- CAS No.
- 142-45-0
- Jingsj CID
- J-1148204-0
- Molecular Formula
- C4H2O4
- Chinese Name
- 丁炔二酸
- Molecular Weight
- 114.056 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 180-187 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 362.4±25.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 187.2±19.7 °C |
GHS Safety & Compliance
Acute ToxicitySignal word: Danger
Frequently Asked Questions
What is the CAS number of Acetylenedicarboxylic acid?
142-45-0
What are the molecular formula and molecular weight of Acetylenedicarboxylic acid?
C4H2O4, molecular weight 114.056 g/mol
Is Acetylenedicarboxylic acid hazardous?
Danger
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026