3-Ethylphenylboronic acid
Also known as: (3-Ethylphenyl)boronic acid, 3-Ethylbenzeneboronic acid, B-(3-Ethylphenyl)-Boronic acid, Boronic acid, B-(3-ethylphenyl)-
3-Ethylphenylboronic acid (CAS 90555-65-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H11BO2 and a molecular weight of 149.983 g/mol. Key properties include a melting point of 102.5-107.5ºC, a boiling point of 299.6±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 135.0±25.4 °C. It is classified under GHS with signal word Warning and hazard statements 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.
- 90555-65-0
- Jingsj CID
- J-901967-4
- Molecular Formula
- C8H11BO2
- Molecular Weight
- 149.983 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 102.5-107.5ºC |
|---|---|
| Boiling Point | 299.6±33.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 135.0±25.4 °C |
| Exact Mass | 150.085205 |
| PSA | 40.46000 |
| LogP | 2.58 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.521 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye 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 3-Ethylphenylboronic acid?
The CAS number of 3-Ethylphenylboronic acid is 90555-65-0.
What are the molecular formula and molecular weight of 3-Ethylphenylboronic acid?
3-Ethylphenylboronic acid has molecular formula C8H11BO2 and molecular weight 149.983 g/mol.
Is 3-Ethylphenylboronic acid hazardous?
3-Ethylphenylboronic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 3-Ethylphenylboronic acid?
For 3-Ethylphenylboronic acid, Upstream Products: 1-bromo-3-ethylbenzene, n-Butyllithium, Trimethyl borate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Ethylphenylboronic acid (CAS 90555-65-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-901967-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.