Description

Phosphorous Acid Di(4-Isopropylbenzyl)Phenyl Ester is a specialized organophosphorus compound with the CAS registry number 59924-18-4. This chemical serves as a high-performance intermediate and functional additive, valued for its unique molecular structure that combines aromatic and aliphatic groups. It is primarily sought by manufacturers in the polymer and specialty chemical industries for applications requiring advanced material properties and process stability.

Application

• As a stabilizer and antioxidant in high-temperature polymer processing, including polyolefins and engineering plastics.
• As a key intermediate in the synthesis of advanced flame retardants and plasticizers.
• As a ligand or precursor in the development of organometallic catalysts for specialty chemical reactions.
• In the formulation of specialty lubricants and hydraulic fluids to enhance thermal and oxidative stability.
• As an additive in epoxy resin systems and other thermosetting polymers to modify curing characteristics and final properties.
• For research and development purposes in pharmaceutical and agrochemical discovery as a building block for novel active ingredients.

Basic Information

Product Name	Phosphorous Acid Di(4-Isopropylbenzyl)Phenyl Ester
CAS No.	59924-18-4
Molecular Formula	C26H31O3P
Molecular Weight	422.50 g/mol
Synonyms	Di(4-Isopropylbenzyl) Phenyl Phosphite; Phenyl Di(4-isopropylbenzyl) Phosphite; Phosphorous Acid Phenyl Di(4-isopropylbenzyl) Ester; Di(4-Isopropylbenzyl) Phenyl Ester of Phosphorous Acid; Phenol, 4-(1-methylethyl)-, phosphite (3:1); Phosphorous Acid Tris(4-isopropylphenyl) Ester (related); Antioxidant 168 (potential trade name association); Irgafos 168 (potential trade name association).
EINECS	Contact for details

Quality Control

Our production of Phosphorous Acid Di(4-Isopropylbenzyl)Phenyl Ester adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. The product may be hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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