Triphenylphosphine Oxide(TPPO) CAS No.:791-28-6

Triphenylphosphine Oxide (TPPO), with the chemical formula (C₆H₅)₃PO or C₁₈H₁₅OP and molecular weight 278.29 g/mol, is a stable organophosphorus compound. It appears as a white to off-white crystalline solid and is a common byproduct in reactions involving triphenylphosphine, such as the Wittig and Mitsunobu reactions. TPPO is valued for its versatility as a ligand, catalyst, and additive in various industrial and research applications.

Brand:
aozun
Synonym:
Triphenylphosphine oxide
Appearance:
White crystalline powder
CAS No.:
791-28-6
Molecular Formula:
C18H15OP
Molecular Weight:
278
EINECS:
212-338-8
Solubility:
slightly soluble in water

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Product Description

Product Description

Key Properties

Appearance: White to cream-colored crystalline powder
Melting Point: 154–158°C
Boiling Point: ~360°C
Density: ~1.212 g/cm³
Solubility: Soluble in organic solvents like chloroform, acetone, aromatic hydrocarbons, and ether; slightly soluble in ethanol; poorly soluble in water
Stability: Chemically stable with strong P=O bond

High-purity grades (typically ≥99%) are available for technical and specialty uses.

Main Applications

Organic Synthesis: Catalyst or Lewis base in epoxidations, Michael additions, coupling reactions, and other transformations.
Polymer & Materials Science: Flame retardant additive in plastics and polymers; curing agent for epoxies.
Coordination Chemistry: Ligand for metal complexes in catalysis and material synthesis.
Electronics & Energy: Additive in perovskite solar cells, OLEDs, and redox flow batteries for defect passivation and performance enhancement.
Analytical Chemistry: Used in extraction and determination of metals (e.g., cadmium, mercury).
Other: Crystallization aid, anti-fouling agent, and intermediate in phosphorus chemistry.

Quality Standards

Available in high-purity powder form with low impurities, suitable for pharmaceutical, electronic, and industrial applications.

Safety Information

Generally stable but handle with standard laboratory precautions. Avoid inhalation of dust and contact with eyes or skin. Use appropriate PPE and refer to the SDS for detailed handling, storage, and disposal recommendations.