p-Tolylphosphonic acid
Also known as: (4-Methylphenyl)phosphonic acid, 4-Methylphenylphosphonic acid, p-Methylphenylphosphonic acid, Phosphonic acid, (4-methylphenyl)-, p-tolylphosphonic acid
p-Tolylphosphonic acid (CAS 3366-72-1) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H9O3P and a molecular weight of 172.118 g/mol. Key properties include a boiling point of 355.8±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 169.0±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3366-72-1
- Jingsj CID
- J-1174734-5
- Molecular Formula
- C7H9O3P
- Molecular Weight
- 172.118 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 355.8±35.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 169.0±25.9 °C |
| Exact Mass | 172.028931 |
| PSA | 67.34000 |
| LogP | 1.00 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.561 |
| Storage Conditions | 2-8°C |
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 p-Tolylphosphonic acid?
The CAS number of p-Tolylphosphonic acid is 3366-72-1.
What are the molecular formula and molecular weight of p-Tolylphosphonic acid?
p-Tolylphosphonic acid has molecular formula C7H9O3P and molecular weight 172.118 g/mol.
What are the upstream and downstream products of p-Tolylphosphonic acid?
For p-Tolylphosphonic acid, Upstream Products: Diethyl (4-methylphenyl)phosphonate, 4-Bromotoluene, p-Toluidine; Downstream Products: 4-Bromotoluene, Phosphoric acid, 4-Phosphonobenzoic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "p-Tolylphosphonic acid (CAS 3366-72-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1174734-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.