![Molecular structure of (3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one (CAS 13257-81-3)](/images/chem_structures_svg/198/13257-81-3.svg)
(3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one
Also known as: TMSACAC, Acetylacetone enol trimethylsilyl ether, 2-Trimethylsiloxypent-2-en-4-one, 2-Trimethylsiloxypent-2-ene-4-one, 4-Trimethylsilyloxy-3-pentene-2-one, 4-Trimethylsiloxy-3-penten-2-one, 3-Penten-2-one, 4-[(trimethylsilyl)oxy]-, (3E)-, MFCD00009853, EINECS 236-252-5
(3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one (CAS 13257-81-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H16O2Si and a molecular weight of 172.297 g/mol. Key properties include a boiling point of 205.1±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 58.9±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13257-81-3
- Jingsj CID
- J-23832-4
- Molecular Formula
- C8H16O2Si
- Molecular Weight
- 172.297 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 205.1±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 58.9±0.0 °C |
| Exact Mass | 172.091949 |
| PSA | 26.30000 |
| LogP | 2.24 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.426 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of (3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one?
The CAS number of (3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one is 13257-81-3.
What are the molecular formula and molecular weight of (3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one?
(3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one has molecular formula C8H16O2Si and molecular weight 172.297 g/mol.
Is (3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one hazardous?
(3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(3E)-4-[(Trimethylsilyl)oxy]-3-penten-2-one (CAS 13257-81-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23832-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.