Description

Isooctyl Diphenyl Phosphate is a high-performance organophosphate ester widely utilized as a flame retardant and plasticizer. This compound is valued for its excellent compatibility with various polymer systems and its ability to impart flame resistance without significantly compromising material properties. It is a critical additive for manufacturers in the plastics, rubber, and coatings industries seeking to enhance product safety and performance. Its balanced properties make it suitable for applications requiring both flexibility and fire safety compliance.

Application

• Primary flame retardant and plasticizer for flexible polyvinyl chloride (PVC) in wire and cable insulation.
• Flame retardant additive in engineering plastics such as polycarbonate (PC) and PC/ABS blends for electronic housings.
• Functional plasticizer for synthetic rubbers and elastomers used in automotive and industrial components.
• Flame retardant component in adhesives, sealants, and specialty coatings.
• Additive in hydraulic fluids and lubricants to improve fire resistance.
• Plasticizer for cellulose-based materials and other specialty polymer formulations.

Basic Information

Product Name	Isooctyl Diphenyl Phosphate
CAS No.	29319-57-1
Molecular Formula	C20H27O4P
Molecular Weight	362.40 g/mol
Synonyms	Phosphoric Acid, Isooctyl Diphenyl Ester; Diphenyl Isooctyl Phosphate; Isooctyl Diphenyl Phosphate; IDDP; DPIP; Santicizer 141; Firemaster 836; 1-Methylheptyl Diphenyl Phosphate; Isooctyl Ester of Diphenyl Phosphoric Acid
EINECS	249-545-4

Quality Control

Our Isooctyl Diphenyl Phosphate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous internal specifications, which typically include assay, color, acidity, and moisture content. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We adhere to relevant industry standards and can support compliance requirements for global markets, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and strong bases. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0 %
Color (APHA)	≤ 50
Acidity (as H3PO4)	≤ 0.05 %
Moisture (KF)	≤ 0.1 %
Specific Gravity (20/20°C)	1.080 - 1.100
Refractive Index (n20D)	1.505 - 1.515

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