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Description and features

TrPP (Triphenylphosphine) is a white solid (crystals, flakes, pastilles), its chemical formula is C18H15P. TrPP is an organophosphorus compound and is a widely used catalyst.

Triphenylphosphine is also known as TPP, TrP and triphenylphosphane.


Europe / United States: Triphenylphosphine (TrPP) is ➔ on stock in our local warehouses. Our lead time is about one week if delivered in 25 KG paper bags.

Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

This substance (CAS: 603-35-0) has been registered (FULL substance) under REACH (EC) 1907/2006.

Product Identification

CAS number 603-35-0
EU nameTriphenylphosphane
EC number210-036-0
HS code2931 39
IUPAC nameTriphenylphosphine


Appearance Off-white crystals, flakes or pastilles.
Assay≥ 99.50 %
Melting point 80.0 – 82.0 ºC
Loss on drying≤0.10 %
Triphenylphosphine Oxide ≤0.50 %


TrPP finds its application in pharmaceuticals, vitamins, agrochemicals, OXO-alcohols, coatings, epoxy resins, fragrances, polycarbonates. This material is highly soluble in non-polar organic solvents like benzene and diethyl ether.


Available packaging: 25 KG paper bags, 500 KG big bags.
Special packaging is available on request.


Store Triphenylphosphine cool, dry and well-ventilated area and in line with legal requirements.
Keep TrPP away from heat sources and oxidizing agents.


A Material Safety Data Sheets (MSDS) is available for Triphenylphosphine and all other products supplied by Vesta Chemicals BV.

An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Molecular and structural information

Molecular formula C18H15P
Molecular weight 262.29 g/mol
Smiles notation C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3
Structural formula: triphenylphosphine

Physicochemical information

Boiling range 195.0- 205.0 °C
Bulk density 500 – 600 kg/m3
Density 1.194 g/cm3
Melting range 79.0 – 82.0 °C
Partition coefficient (log Pow) > 2.587
Solubility in water 0.09 mg/l @ 25 °C
Vapour pressure 0.0000029 hPa @ 25 °C

TrPP | CAS: 603-35-0 | Disclaimer. This information is supplied solely for informational purposes and Vesta Chemicals bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.