tris(4-methoxyphenyl)phosphine
Also known as: trianisylphosphine, tri(p-methoxyphenyl)phosphine, tri-p-anisylphosphine, tris(p-anisyl)phosphine, tris(p-methoxyphenyl)phosphine, phosphine, tris(4-methoxyphenyl)-, phosphine, tris(p-methoxyphenyl)-
tris(4-methoxyphenyl)phosphine (CAS 855-38-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C21H21O3P and a molecular weight of 352.36 g/mol. Key properties include a melting point of 131-134 °C(lit.), a boiling point of 457.8±40.0 °C at 760 mmHg, a density of 131-134ºC(lit.) and a flash point of 287.3±27.6 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 855-38-9
- Jingsj CID
- J-13883-0
- Molecular Formula
- C21H21O3P
- Molecular Weight
- 352.36 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 131-134 °C(lit.) |
|---|---|
| Boiling Point | 457.8±40.0 °C at 760 mmHg |
| Density | 131-134ºC(lit.) |
| Flash Point | 287.3±27.6 °C |
| Exact Mass | 352.122833 |
| PSA | 41.28000 |
| LogP | 5.44 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2909309090 |
|---|---|
| Summary | 2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of tris(4-methoxyphenyl)phosphine?
The CAS number of tris(4-methoxyphenyl)phosphine is 855-38-9.
What are the molecular formula and molecular weight of tris(4-methoxyphenyl)phosphine?
tris(4-methoxyphenyl)phosphine has molecular formula C21H21O3P and molecular weight 352.36 g/mol.
Is tris(4-methoxyphenyl)phosphine hazardous?
tris(4-methoxyphenyl)phosphine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "tris(4-methoxyphenyl)phosphine (CAS 855-38-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13883-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.