4-Ethoxystyrene
Also known as: 1-Ethoxy-4-vinylbenzene, 1-ethenyl-4-ethoxybenzene, 4-VINYLPHENETOLE, p-Ethoxystyrene, Benzene, 1-ethenyl-4-ethoxy-
4-Ethoxystyrene (CAS 5459-40-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H12O and a molecular weight of 148.20200 g/mol. Key properties include a boiling point of 99-100 °C11 mm Hg(lit.), a density of 0.99 g/mL at 25 °C(lit.) and a flash point of 87.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 5459-40-5
- Jingsj CID
- J-18385-7
- Molecular Formula
- C10H12O
- Molecular Weight
- 148.20200 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 99-100 °C11 mm Hg(lit.) |
|---|---|
| Density | 0.99 g/mL at 25 °C(lit.) |
| Flash Point | 87.8 °C |
| Exact Mass | 148.08900 |
| PSA | 9.23000 |
| LogP | 2.72830 |
| Refractive Index | n20/D 1.549(lit.) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2909309090 |
|---|---|
| Summary | 2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Ethoxystyrene?
The CAS number of 4-Ethoxystyrene is 5459-40-5.
What are the molecular formula and molecular weight of 4-Ethoxystyrene?
4-Ethoxystyrene has molecular formula C10H12O and molecular weight 148.20200 g/mol.
Is 4-Ethoxystyrene hazardous?
4-Ethoxystyrene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Ethoxystyrene (CAS 5459-40-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18385-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.