4-Tolylboronic acid
Also known as: (4-Methylphenyl)boronic acid, p-Tolylboronic acid, 4-Methylphenylboronic acid, 4-Methylbenzeneboronic acid, Boronic acid, B-(4-methylphenyl)-, p-Methylbenzeneboronic acid, MFCD00039138
4-Tolylboronic acid (CAS 5720-05-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H9BO2 and a molecular weight of 135.956 g/mol. Key properties include a melting point of 256-263 °C(lit.), a boiling point of 275.2±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 120.2±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5720-05-8
- Jingsj CID
- J-43996-3
- Molecular Formula
- C7H9BO2
- Molecular Weight
- 135.956 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 256-263 °C(lit.) |
|---|---|
| Boiling Point | 275.2±33.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 120.2±25.4 °C |
| Exact Mass | 136.069565 |
| PSA | 12.03000 |
| LogP | 2.05 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.528 |
Frequently Asked Questions
What is the CAS number of 4-Tolylboronic acid?
The CAS number of 4-Tolylboronic acid is 5720-05-8.
What are the molecular formula and molecular weight of 4-Tolylboronic acid?
4-Tolylboronic acid has molecular formula C7H9BO2 and molecular weight 135.956 g/mol.
What are the upstream and downstream products of 4-Tolylboronic acid?
For 4-Tolylboronic acid, Upstream Products: 4-Bromotoluene, 4-Iodotoluene, p-Tolyl trifluoromethanesulfonate; Downstream Products: 5-(p-Tolyl)pyridin-2-amine, 2-Amino-4'-methylbenzophenone, 4'-methyl-[1,1'-biphenyl]-2-amine.
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-Tolylboronic acid (CAS 5720-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43996-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.