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Triphenylphosphine

Triphenylphosphine

CAS Number: 603-35-0

Molecular Formula: C18H15P

Wittig Reagent PrecursorOrganophosphorus LigandSynthetic Reagent

About Triphenylphosphine

Triphenylphosphine (PPh₃), also known as triphenylphosphane, is an organophosphorus compound featuring a central phosphorus atom bonded to three phenyl groups. Reagent and ligand in organic & organometallic chemistry: fundamentally, it functions as a nucleophile and a reducing agent due to the lone pair of electrons on...

Synonyms

  • triphenylphosphorane
  • tri-phenyl-phosphine;
  • Triphenylphosphine, polymer-bound
  • Triphenylphosphine-d15
  • ACMC-1BGGS
View all

Triphenylphosphine Specifications

CAS Number
603-35-0
Molecular Formula
C18H15P
IUPAC Name
triphenylphosphane
Canonical SMILES
C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3
InChI Key
RIOQSEWOXXDEQQ-UHFFFAOYSA-N
InChI
1S/C18H15P/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15H
EINECS Number
210-036-0
MDL Number
MFCD00003043
HSN No
29339990 / 29319090
melting_point
176 °F (NTP, 1992)
Density
1.132
Boiling Point
377ºC
Melting Point
78.5-81.5ºC
Flash Point
181ºC
Refractive Index
1.5918 (20ºC)
Water Solubility
Insoluble
Vapor Density
9 (vs air)
Vapor Pressure
5 mm Hg (20 °C)
Safety Statements Code
S26-S36/37/39-S61
Risk Statements Code
R22; R43; R53
Hazard Declarations Code
H302; H317; H373
Caution Statements Code
P280; P301 + P312 + P330; P333 + P313

Pharmaceutical Intermediates & Precursors

Essential reagent in Mitsunobu reaction for forming complex esters and ethers, crucial steps in API synthesis (steroids, peptides)

Agrochemical Intermediates & Precursors

Synthesis of complex intermediates, certain organophosphorus pesticides & herbicides

Ligand

Preferred to stabilize and modify transition metal catalysts (e.g., Wilkinson's catalyst) for large-scale polymerization and fine chemical synthesis

Reagent

Wittig reaction for the stereoselective formation of carbon-carbon double bonds

Reducing Agent

To reduce azides to amines (Staudinger reaction) and hydroperoxides to alcohols

Polymerization Additive

Acts as a thermal stabilizer in certain polymer systems to prevent degradation during processing

Stability

Stable

Incomptability

Incompatible with oxidizing agents, acids

Condition

Store at RT

  1. triphenylphosphorane
  2. tri-phenyl-phosphine;
  3. Triphenylphosphine, polymer-bound
  4. Triphenylphosphine-d15
  5. ACMC-1BGGS

Triphenylphosphine FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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