Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
Also known as: (2,4,6-Trimethylbenzoyl)diphenylphosphine oxide, 2,4,6-Trimethylbenzoyldiphenylphosphine oxide, Diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide, Speedcure TPO, Photoinitiator TPO, (Diphenylphosphoryl)(2,4,6-trimethylphenyl)methanone, (Diphenylphosphoryl)(mesityl)methanone, Methanone, (diphenylphosphinyl)(2,4,6-trimethylphenyl)-, diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone, YF-PI TPO, IHT-PI TPO
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (CAS 75980-60-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C22H21O2P and a molecular weight of 348.375 g/mol. Key properties include a melting point of 88-92 °C(lit.), a boiling point of 519.6±60.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 268.1±32.9 °C. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction, H361 — Suspected of damaging fertility or the unborn child and H411 — Toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 75980-60-8
- Jingsj CID
- J-1344020-5
- Molecular Formula
- C22H21O2P
- Molecular Weight
- 348.375 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 88-92 °C(lit.) |
|---|---|
| Boiling Point | 519.6±60.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 268.1±32.9 °C |
| Exact Mass | 348.127930 |
| PSA | 43.95000 |
| LogP | 4.49 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.600 |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H361 — Suspected of damaging fertility or the unborn child
- H411 — Toxic to aquatic life with long lasting effects
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 Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide?
The CAS number of Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide is 75980-60-8.
What are the molecular formula and molecular weight of Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide?
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide has molecular formula C22H21O2P and molecular weight 348.375 g/mol.
Is Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide hazardous?
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H361 — Suspected of damaging fertility or the unborn child; H411 — Toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide?
For Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, Upstream Products: Ethyl diphenylphosphinite, 2,4,6-Trimethylbenzoyl chloride; Downstream Products: Diphenylphosphine oxide, 2,4,6-Trimethylbenzaldehyde, 2,4,6-Trimethylbenzoic 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. "Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (CAS 75980-60-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1344020-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.