803-19-0

Basic information

• Product Name: Bis(4-carboxyphenyl)phenyl-phosphine oxide
• Synonyms: BIS(4-CARBOXYPHENYL)PHENYLPHOSPHINE OXIDE;4,4'-(Phenylphosphinylidene)dibenzoic acid;Bis(4-carboxyphenyl) phenyl phosphine oxide(BCPPO);4,4'-(Phenyloxophosphoranylidene)bisbenzoic acid;4,4'-Phenylphosphinylidenebis(benzoic acid);Phenylbis(4-carboxyphenyl)phosphine oxide;4-[(4-carboxyphenyl)-phenylphosphoryl]benzoic acid;4-[(4-carboxyphenyl)-phenyl-phosphoryl]benzoic acid
• CAS NO: 803-19-0
• Molecular Formula: C₂₀H₁₅O₅P
• Molecular Weight: 366.3
• EINECS: 212-355-0
• Product Categories: API intermediates
• Mol File: 803-19-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 642.9 °C at 760 mmHg
• Flash Point: 342.6 °C
• Appearance: /
• Density: 1.42 g/cm³
• Vapor Pressure: 2.08E-17mmHg at 25°C
• Refractive Index: 1.667
• Storage Temp.: Sealed in dry,Room Temperature
• Water Solubility: 73.26mg/L(23 oC)
• CAS DataBase Reference: Bis(4-carboxyphenyl)phenyl-phosphine oxide(CAS DataBase Reference)
• NIST Chemistry Reference: Bis(4-carboxyphenyl)phenyl-phosphine oxide(803-19-0)
• EPA Substance Registry System: Bis(4-carboxyphenyl)phenyl-phosphine oxide(803-19-0)

Safety Data

• Hazardous Substances Data: 803-19-0(Hazardous Substances Data)

Usage

General Description

Bis(4-carboxyphenyl)phenyl-phosphine oxide is a chemical compound with the molecular formula C26H19O4P. It is a phosphine oxide derivative that is commonly used as a photoinitiator in various industrial processes, such as in the production of polymers and coatings. Bis(4-carboxyphenyl)phenyl-phosphine oxide is known for its ability to initiate photopolymerization reactions when exposed to ultraviolet or visible light, leading to the formation of cross-linked polymer networks. Its use as a photoinitiator makes it a valuable component in the manufacturing of adhesives, inks, and other products that require rapid curing under light exposure. Additionally, its unique chemical structure and properties make it a useful material for research and development in the fields of photochemistry and photophysics.

InChI:InChI=1/C20H15O5P/c21-19(22)14-6-10-17(11-7-14)26(25,16-4-2-1-3-5-16)18-12-8-15(9-13-18)20(23)24/h1-13H,(H,21,22)(H,23,24)

Upstream product

• 644-97-3 Dichlorophenylphosphine 
• 16822-31-4 bis(4-methylphenyl)phenylphosphine sulfide 

Relevant articles and documents

Structure and properties of halogen-free flame retardant and phosphorus-containing aromatic poly(1,3,4-oxadiazole)s fiber

In order to improve the flame retardance of aromatic polyoxadiazole (p-POD) fiber, a series of phosphorus-containing PODs (pho-POD) were synthesized by introducing triaryl phosphine oxide (TPO) units into the main chains of p-POD using hydrazine sulfate, terephthalic acid and bis(p-carboxy)phenyl phosphine oxide (BCPPO) as monomers, and then halogen-free flame resistant pho-POD fibers were obtained from wet spinning. The structure and properties of the pho-POD fibers were characterized and measured in detail using the methods of wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), the limiting oxygen index (LOI), oxygen bomb calorimeter, Pyrolysis-Gas Chromatography/Mass Spectrometry (Py-GC/MS) etc. The results show that the introduction of TPO units resulted in the weakening of the crystallization ability, the formation of the poriferous and lax interior structure, the slight decrease in the thermal stability and mechanical properties of the POD fibers. However, the value of LOI obviously increased from 28% to 35%, and the gross heat of combustion (GHC) decreased from 19.72 MJ kg?1 to 17.84 MJ kg?1 with the increase in the content of the BCPPO. Moreover, the combustion residue of pho-POD fiber revealed a smooth, dense and non-porous carbon layer, which could effectively play a role of oxygen barrier and enhance the flame resistance. From the above results, it can be concluded that the flame resistance of the POD fiber could be improved significantly after introducing the TPO unit. The results of Py-GC/MS illustrate that the TPO unit of pho-POD could inhibit the production of volatile products, which could be confirmed that the mechanism of enhancing the flame retardancy by introducing TPO units was mainly the flame retardation of the condensed phase.