(R)-Styrene oxide
Also known as: (R)-Phenyloxirane, (2R)-2-Phenyloxirane, (R)-(+)-Styrene oxide, (R)-Epoxystyrol, (R)-Phenylethylene oxide, (R)-(epoxyethyl)benzene, (R)-1,2-Epoxyethylbenzene, Benzene, (epoxyethyl)-, (R)-
(R)-Styrene oxide (CAS 20780-53-4) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C8H8O and a molecular weight of 120.148 g/mol. Key properties include a melting point of -37ºC, a boiling point of 193.9±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 79.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H312 — Harmful in contact with skin, H319 — Causes serious eye irritation and H350 — May cause cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20780-53-4
- Jingsj CID
- J-13251-2
- Molecular Formula
- C8H8O
- Molecular Weight
- 120.148 g/mol
- Category
- Ethers
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -37ºC |
|---|---|
| Boiling Point | 193.9±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 79.4±0.0 °C |
| Exact Mass | 120.057518 |
| PSA | 12.53000 |
| LogP | 1.61 |
| Vapor Pressure | 0.6±0.4 mmHg at 25°C |
| Refractive Index | 1.564 |
| Storage Conditions | 2-8℃ |
GHS Safety & Compliance
- H312 — Harmful in contact with skin
- H319 — Causes serious eye irritation
- H350 — May cause cancer
Customs & Trade Information
| HS Code | 2910900090 |
|---|---|
| Summary | 2910900090. epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of (R)-Styrene oxide?
The CAS number of (R)-Styrene oxide is 20780-53-4.
What are the molecular formula and molecular weight of (R)-Styrene oxide?
(R)-Styrene oxide has molecular formula C8H8O and molecular weight 120.148 g/mol.
Is (R)-Styrene oxide hazardous?
(R)-Styrene oxide has GHS signal word Danger and hazard statements H312 — Harmful in contact with skin; H319 — Causes serious eye irritation; H350 — May cause cancer.
What are the upstream and downstream products of (R)-Styrene oxide?
For (R)-Styrene oxide, Upstream Products: (R)-(-)-2-Bromo-1-phenylethanol, Styrene oxide, tert-Butyl carbamate; Downstream Products: (S)-(+)-1-Phenyl-1,2-ethanediol 2-tosylate, (R)-(-)-2-Methoxy-2-phenylethanol, (S)-(+)-2-Methoxy-2-phenylethanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(R)-Styrene oxide (CAS 20780-53-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13251-2 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.