Isobutyric anhydride
Also known as: 2-Methylpropionic anhydride, 2-Methylpropanoic anhydride, Isobutyric acid anhydride, Propanoic acid, 2-methyl-, anhydride, Isobutyryl anhydride, Bis(2-methylpropionic) anhydride
Isobutyric anhydride (CAS 97-72-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H14O3 and a molecular weight of 158.195 g/mol. Key properties include a melting point of -53 °C, a boiling point of 183.6±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 59.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 97-72-3
- Jingsj CID
- J-11194-6
- Molecular Formula
- C8H14O3
- Molecular Weight
- 158.195 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -53 °C |
|---|---|
| Boiling Point | 183.6±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 59.4±0.0 °C |
| Exact Mass | 158.094299 |
| PSA | 43.37000 |
| LogP | 1.27 |
| Additional Property | 5.45 (vs air) |
| Vapor Pressure | 0.8±0.3 mmHg at 25°C |
| Refractive Index | 1.418 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Isobutyric anhydride?
The CAS number of Isobutyric anhydride is 97-72-3.
What are the molecular formula and molecular weight of Isobutyric anhydride?
Isobutyric anhydride has molecular formula C8H14O3 and molecular weight 158.195 g/mol.
Is Isobutyric anhydride hazardous?
Isobutyric anhydride has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isobutyric anhydride (CAS 97-72-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11194-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.