132-29-6

Basic information

• Product Name: 2-BIPHENYLYL DIPHENYL PHOSPHATE
• Synonyms: biphenyl-2-yldiphenylphosphate;Diphenylo-biphenylylphosphate;dow5;dowplasticizer5;o-Phenylphenylbisphenylphosphate;o-Phenylphenyldiphenylphosphate;o-Xenyldiphenylphosphate;Phosphoricacid,(1,1’-biphenyl)-2-yldiphenylester
• CAS NO: 132-29-6
• Molecular Formula: C₂₄H₁₉O₄P
• Molecular Weight: 402.38
• Mol File: 132-29-6.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 494.4°Cat760mmHg
• Flash Point: 266°C
• Appearance: /
• Density: 1.245g/cm³
• Vapor Pressure: 1.96E-09mmHg at 25°C
• Refractive Index: 1.611
• Storage Temp.: -20°C Freezer, Under inert atmosphere
• Solubility: Acetone (Slightly), DMSO (Slightly), Methanol (Slightly)
• Stability: Unstable in Solution
• CAS DataBase Reference: 2-BIPHENYLYL DIPHENYL PHOSPHATE(CAS DataBase Reference)
• NIST Chemistry Reference: 2-BIPHENYLYL DIPHENYL PHOSPHATE(132-29-6)
• EPA Substance Registry System: 2-BIPHENYLYL DIPHENYL PHOSPHATE(132-29-6)

Safety Data

• Hazardous Substances Data: 132-29-6(Hazardous Substances Data)

Usage

Description

2-BIPHENYLYL DIPHENYL PHOSPHATE is an organic compound that is primarily used as a plasticizer in the manufacturing of various plastic products. It is characterized by its chemical properties, which include being insoluble in water and combustible.

Uses

Used in Plastic Industry:
2-BIPHENYLYL DIPHENYL PHOSPHATE is used as a plasticizer to enhance the flexibility, workability, and durability of plastics. It is particularly useful in the production of polyvinyl chloride (PVC) products, where it helps to improve the processability and performance of the material.
Used in Flame Retardant Industry:
Due to its combustible nature, 2-BIPHENYLYL DIPHENYL PHOSPHATE can also be used as a component in the formulation of flame retardants. These flame retardants are essential in various applications where fire safety is a concern, such as in the construction, electronics, and automotive industries.
Used in Lubricant Industry:
2-BIPHENYLYL DIPHENYL PHOSPHATE can be utilized as an additive in the lubricant industry to improve the performance and longevity of lubricants. Its properties contribute to better lubrication, reduced wear, and enhanced thermal stability, making it a valuable component in the formulation of various lubricants.

Purification Methods

Distil the ester in a vacuum, then percolate it through an alumina column. Pass the ester through a packed column maintained at 150o to remove residual traces of volatile materials by a counter-current stream of nitrogen at reduced pressure. [Dobry & Keller J Phys Chem 61 1448 1957, Beilstein 6 III 3295, 6 IV 4585.]

InChI:InChI=1/C24H19O4P/c25-29(26-21-14-6-2-7-15-21,27-22-16-8-3-9-17-22)28-24-19-11-10-18-23(24)20-12-4-1-5-13-20/h1-19H

Synthetic route

2-Phenylphenoxy dichlorophosphate (36240-28-5) + phenol (108-95-2) → phosphoric acid biphenyl-2-yl ester-diphenyl ester (132-29-6)

Conditions	Yield
With magnesium chloride at 150 - 170℃;

2-Phenylphenol (90-43-7) → phosphoric acid biphenyl-2-yl ester-diphenyl ester (132-29-6)

Conditions	Yield
Multi-step reaction with 2 steps 1: MgCl2; POCl3 / 120 - 135 °C 2: MgCl2 / 150 - 170 °C View Scheme

Upstream product

• 90-43-7 2-Phenylphenol 
• 36240-28-5 2-Phenylphenoxy dichlorophosphate 
• 108-95-2 phenol