Trimethylacetic anhydride
Also known as: Pivalic anhydride, 2,2-Dimethylpropionic anhydride, 2,2-Dimethylpropanoic anhydride, Bis(trimethylacetic) anhydride, Bis(2,2-dimethylpropionic) anhydride, Pivaloyl anhydride, Neopentanoic anhydride
Trimethylacetic anhydride (CAS 1538-75-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H18O3 and a molecular weight of 186.248 g/mol. Key properties include a boiling point of 193.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 57.2±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour 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.
- 1538-75-6
- Jingsj CID
- J-1361750-0
- Molecular Formula
- C10H18O3
- Molecular Weight
- 186.248 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 193.0±0.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 57.2±0.0 °C |
| Exact Mass | 186.125595 |
| PSA | 43.37000 |
| LogP | 1.97 |
| Vapor Pressure | 0.5±0.3 mmHg at 25°C |
| Refractive Index | 1.429 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- 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 Trimethylacetic anhydride?
The CAS number of Trimethylacetic anhydride is 1538-75-6.
What are the molecular formula and molecular weight of Trimethylacetic anhydride?
Trimethylacetic anhydride has molecular formula C10H18O3 and molecular weight 186.248 g/mol.
Is Trimethylacetic anhydride hazardous?
Trimethylacetic anhydride has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Trimethylacetic anhydride?
For Trimethylacetic anhydride, Upstream Products: Pivaloyl chloride, Pivalic acid, Ethoxyethyne; Downstream Products: Pivaloyl chloride, 2,6-Di-tert-butyl-4-methylpyridine, tert-Butyl N-(5-aminopentyl)carbamate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethylacetic anhydride (CAS 1538-75-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361750-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.