Description

Phosphoric Acid Bis(2,5-Dimethylphenyl)Phenyl Ester CAS NO 72121-83-6 is a specialized organophosphorus compound widely utilized as a high-performance flame retardant and plasticizer. Its molecular structure provides excellent thermal stability and compatibility with various polymer matrices, making it a critical additive for enhancing material safety and performance. This product is essential for manufacturers in the polymer, electronics, and construction material industries seeking to meet stringent fire safety regulations without compromising on material properties.

Application

• Primary use as a flame retardant and plasticizer in engineering thermoplastics and polymer blends.
• Additive for PVC (polyvinyl chloride), wire and cable insulation, and other halogen-containing polymers.
• Component in fire-resistant coatings and intumescent systems for construction materials.
• Used in the formulation of electronic encapsulants and circuit board laminates to improve fire safety.
• Potential additive for synthetic resins and adhesives requiring enhanced flame retardancy.
• Intermediate in the synthesis of other specialty organophosphorus chemicals.

Basic Information

Product Name	Phosphoric Acid Bis(2,5-Dimethylphenyl)Phenyl Ester
CAS No.	72121-83-6
Molecular Formula	C22H23O4P
Molecular Weight	382.39 g/mol
Synonyms	Phenyl Bis(2,5-dimethylphenyl) Phosphate; Bis(2,5-dimethylphenyl) Phenyl Phosphate; Phosphoric Acid, Phenyl Bis(2,5-dimethylphenyl) Ester; 2,5-Xylyl Phenyl Phosphate; Flame Retardant BDP; FR-BDP; Phenyl-di-(2,5-xylyl)-phosphate
EINECS	Contact for details

Quality Control

Our Phosphoric Acid Bis(2,5-Dimethylphenyl)Phenyl Ester is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including chromatography and spectroscopy, to verify its identity, potency, and the absence of critical impurities. Certificates of Analysis (COA) documenting all key specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which may affect product quality.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Acidity (as H3PO4)	≤ 0.1%
Water Content (KF)	≤ 0.2%
Color (APHA)	≤ 50
Density (20°C)	~1.18 g/cm³
Refractive Index (n20D)	~1.550 - 1.560

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.