Description

2-[4-[1-(4-Hydroxyphenyl)-1-Methylethyl]Phenoxy]-1,3,2-Dioxaphosphorinane-5,5-Dimethanol is a specialized organophosphorus compound featuring a unique cyclic phosphite structure with phenolic and diol functionalities. This chemical is valued for its role as a high-performance intermediate and additive, particularly in the synthesis of advanced polymeric materials. It is primarily sought by manufacturers in the polymer and specialty chemical industries for applications requiring enhanced thermal stability and flame retardancy.

Application

• As a key monomer or intermediate in the synthesis of novel flame-retardant polymers and epoxy resins.
• As a reactive additive in polycarbonate and other engineering plastics to improve thermal and oxidative stability.
• In the formulation of advanced stabilizer packages for plastics, protecting against degradation during high-temperature processing.
• As a building block for specialty phosphite antioxidants used in lubricants and synthetic fibers.
• Potential use in the research and development of pharmaceutical intermediates or bioactive molecules.
• In the production of adhesives and coatings where specific chemical resistance and durability are required.

Basic Information

Item	Detail
Product Name	2-[4-[1-(4-Hydroxyphenyl)-1-Methylethyl]Phenoxy]-1,3,2-Dioxaphosphorinane-5,5-Dimethanol
CAS No.	85586-50-1
Molecular Formula	C22H29O6P
Molecular Weight	420.44 g/mol
Synonyms	1,3,2-Dioxaphosphorinane-5,5-dimethanol, 2-[4-[1-(4-hydroxyphenyl)-1-methylethyl]phenoxy]-; Bis(4-cumylphenyl) pentaerythritol diphosphite (common name); Pentaerythritol bis(4-cumylphenyl) diphosphite; Pentaerythritol bis(2,4-di-tert-butylphenyl) diphosphite (related analog); Antioxidant P-EPQ (trade name reference); Cyclic neopentanetetrayl bis(4-cumylphenyl) phosphite; CAS 85586-50-1; 4,4'-Isopropylidenediphenol cyclic phosphite with pentaerythritol
EINECS	Contact for details

Quality Control

Our production of 2-[4-[1-(4-Hydroxyphenyl)-1-Methylethyl]Phenoxy]-1,3,2-Dioxaphosphorinane-5,5-Dimethanol adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. All materials undergo rigorous analytical testing, including HPLC, NMR, and FT-IR for identity and purity verification. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance protocols.

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 material is moisture-sensitive (hygroscopic); keep the container tightly sealed under an inert atmosphere such as nitrogen to prevent degradation. Keep away from strong oxidizers and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	105 - 115 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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