Description

2-Hydroxy-3-tert-Butyl-5-tert-Butyl-2,5-Dihydro-1,2-Oxaphosphole 2-Oxide is a specialized organophosphorus compound known for its role as a high-performance intermediate and additive. It is valued for its ability to impart flame retardancy and act as a reactive modifier in advanced polymer systems. This chemical is essential for manufacturers in the plastics, specialty chemicals, and advanced materials sectors seeking to enhance product performance and safety.

Application

• Primary intermediate in the synthesis of novel phosphorus-containing flame retardants for engineering plastics and resins.
• Reactive modifier for enhancing the thermal stability and flame resistance of polyolefins, polyesters, and epoxy resins.
• Key building block in the production of specialized ligands and catalysts for organometallic chemistry and cross-coupling reactions.
• Additive for improving the processing characteristics and end-use performance of high-temperature polymers.
• Component in the formulation of advanced composite materials for automotive and aerospace applications.
• Used in research and development of new photoinitiators and UV stabilizers for coatings and adhesives.

Basic Information

Product Name	2-Hydroxy-3-tert-Butyl-5-tert-Butyl-2,5-Dihydro-1,2-Oxaphosphole 2-Oxide
CAS No.	56248-43-2
Molecular Formula	C12H23O3P
Molecular Weight	246.28 g/mol
Synonyms	3,5-Di-tert-butyl-2-hydroxy-2,5-dihydro-1,2-oxaphosphole 2-oxide; 2-Hydroxy-3,5-di-tert-butyl-2,5-dihydro-1,2-oxaphosphole 2-oxide; 2,5-Dihydro-2-hydroxy-3,5-di-tert-butyl-1,2-oxaphosphole 2-oxide; Dihydrooxaphosphole oxide derivative; Phospholan oxide derivative; tert-Butyl substituted oxaphospholane oxide; Flame retardant intermediate HPOP; CAS 56248-43-2
EINECS	Contact for details

Quality Control

Every batch of 2-Hydroxy-3-tert-Butyl-5-tert-Butyl-2,5-Dihydro-1,2-Oxaphosphole 2-Oxide is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, NMR, and GC, to ensure high purity and batch-to-batch consistency suitable for industrial and R&D applications. Comprehensive Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided to guarantee supply reliability and technical compliance.

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 and strong bases. The container must be kept tightly closed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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