Citraconic anhydride
Also known as: 3-methylfuran-2,5-dione, 2,5-Furandione, 3-methyl-, 2-Methylmaleic anhydride, Methylmaleic anhydride, alpha-Methylmaleic anhydride, Citraconic acid anhydride, Maleic anhydride, methyl-, methyl-maleic anhydride, Anhydrid kyseliny citrakonove, EINECS 210-459-0, MFCD00005522
Citraconic anhydride (CAS 616-02-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H4O3 and a molecular weight of 112.08300 g/mol. Key properties include a melting point of 6-10 °C(lit.), a boiling point of 213-214 °C(lit.), a density of 1.247 g/mL at 25 °C(lit.) and a flash point of 101.7 °C. It is classified under GHS with signal word Danger and hazard statements H311 — Toxic in contact with skin, H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 616-02-4
- Jingsj CID
- J-48797-8
- Molecular Formula
- C5H4O3
- Molecular Weight
- 112.08300 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 6-10 °C(lit.) |
|---|---|
| Boiling Point | 213-214 °C(lit.) |
| Density | 1.247 g/mL at 25 °C(lit.) |
| Flash Point | 101.7 °C |
| Exact Mass | 112.01600 |
| PSA | 43.37000 |
| LogP | 0.01610 |
| Additional Property | 4 (vs air) |
| Refractive Index | n20/D 1.471(lit.) |
| Additional Property | decomposes |
GHS Safety & Compliance
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
- H317 — May cause an allergic skin reaction
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2917190090 |
|---|---|
| Summary | 2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Citraconic anhydride?
The CAS number of Citraconic anhydride is 616-02-4.
What are the molecular formula and molecular weight of Citraconic anhydride?
Citraconic anhydride has molecular formula C5H4O3 and molecular weight 112.08300 g/mol.
Is Citraconic anhydride hazardous?
Citraconic anhydride has GHS signal word Danger and hazard statements H311 — Toxic in contact with skin; H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of Citraconic anhydride?
For Citraconic anhydride, Upstream Products: Itaconic acid, Citraconic acid, Pyruvic acid; Downstream Products: Citraconic acid, 5-hydroxy-4-methylfuran-2(5H)-one, 4-Methyl-2(5H)-furanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Citraconic anhydride (CAS 616-02-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48797-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.