Description

22Methylenebis46Ditertbutylphenyllithiumphosphate is a high-performance organophosphorus compound, specifically a lithium salt of a hindered phenolic phosphite. This product matters as a highly effective secondary antioxidant and processing stabilizer, designed to prevent polymer degradation during high-temperature manufacturing. It is primarily needed by manufacturers in the plastics and polymer industries seeking to enhance the longevity and color stability of their finished products.

Application

• Primary use as a secondary antioxidant and processing stabilizer in polyolefins (PP, HDPE, LDPE).
• Protection of engineering plastics (e.g., ABS, polycarbonate blends) against thermal and oxidative degradation during extrusion and molding.
• Enhancement of color stability and reduction of yellowing in sensitive polymers.
• Synergistic use with primary phenolic antioxidants (e.g., Irganox 1010) to provide comprehensive polymer stabilization systems.
• Application in adhesives and sealants to maintain performance properties under thermal stress.
• Potential use as a stabilizer in synthetic fibers and elastomers to improve weatherability.

Basic Information

Product Name	22Methylenebis46Ditertbutylphenyllithiumphosphate
CAS No.	85209-93-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Lithium 2,2'-methylenebis(4,6-di-tert-butylphenyl) phosphate; Bis(4,6-di-tert-butyl-2-methylphenyl) lithium phosphate; Lithium (4,6-di-tert-butyl-2-methylphenol)methylenephosphate; Phosphorous acid, cyclic 2,2'-methylenebis(4,6-bis(1,1-dimethylethyl)phenol) P,P,P'-triester, lithium salt; Antioxidant 626 (Lithium salt variant); Lithium phosphite stabilizer; Hostanox PAR 626 Li; Irgafos 38 Li
EINECS	Contact for details

Quality Control

Our production of 22Methylenebis46Ditertbutylphenyllithiumphosphate adheres to a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with industry specifications for polymer additives. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee traceability and quality assurance for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after initial opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	Contact for details
Loss on Drying	≤ 0.5 %
Residue on Ignition (as Li2O)	Contact for details
Heavy Metals (as Pb)	≤ 10 ppm

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