2,2-Dimethylbut-3-ynoic acid
Also known as: 2,2-dimethylbut-3-ynoic acid, 3-Butynoic acid, 2,2-dimethyl-, 2,2-dimethyl-3-butynoic acid
2,2-Dimethylbut-3-ynoic acid (CAS 56663-76-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8O2 and a molecular weight of 112.127 g/mol. Key properties include a boiling point of 188.2±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 85.6±17.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 56663-76-4
- Jingsj CID
- J-1435939-8
- Molecular Formula
- C6H8O2
- Molecular Weight
- 112.127 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 188.2±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 85.6±17.3 °C |
| Exact Mass | 112.052429 |
| PSA | 37.30000 |
| LogP | 0.79 |
| Vapor Pressure | 0.3±0.7 mmHg at 25°C |
| Refractive Index | 1.463 |
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。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 2,2-Dimethylbut-3-ynoic acid?
The CAS number of 2,2-Dimethylbut-3-ynoic acid is 56663-76-4.
What are the molecular formula and molecular weight of 2,2-Dimethylbut-3-ynoic acid?
2,2-Dimethylbut-3-ynoic acid has molecular formula C6H8O2 and molecular weight 112.127 g/mol.
What are the upstream and downstream products of 2,2-Dimethylbut-3-ynoic acid?
For 2,2-Dimethylbut-3-ynoic acid, Upstream Products: 3-chloro-2,2-dimethylbut-3-enoic acid, Methyl 3-chloro-2,2-dimethylbut-3-enoate, Methyl 2,2-dimethylacetoacetate; Downstream Products: benzyl 2,2-dimethylbut-3-ynoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,2-Dimethylbut-3-ynoic acid (CAS 56663-76-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1435939-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.