Monobutyl maleate
Also known as: Butyl hydrogen maleate, Hydrogen butyl maleate, Maleic acid mono-n-butyl ester, mono-Butyl maleate, n-butyl maleate, Maleic acid monobutyl ester, 2-Butenedioic acid (Z)-, monobutyl ester
Monobutyl maleate (CAS 925-21-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H12O4 and a molecular weight of 172.178 g/mol. Key properties include a melting point of -1.5ºC, a boiling point of 289.1±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 113.9±16.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 925-21-3
- Jingsj CID
- J-34909-7
- Molecular Formula
- C8H12O4
- Molecular Weight
- 172.178 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -1.5ºC |
|---|---|
| Boiling Point | 289.1±23.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 113.9±16.1 °C |
| Exact Mass | 172.073563 |
| PSA | 63.60000 |
| LogP | 1.35 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.470 |
Customs & Trade Information
| HS Code | 2918990090 |
|---|---|
| Summary | 2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Monobutyl maleate?
The CAS number of Monobutyl maleate is 925-21-3.
What are the molecular formula and molecular weight of Monobutyl maleate?
Monobutyl maleate has molecular formula C8H12O4 and molecular weight 172.178 g/mol.
What are the upstream and downstream products of Monobutyl maleate?
For Monobutyl maleate, Upstream Products: Maleic anhydride, 1-Butanol, Butyl formate; Downstream Products: Dibutyl maleate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Monobutyl maleate (CAS 925-21-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34909-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.