Description

Sodium 2,2'-Methylene-Bis-(4,6-Di-tert-Butylphenyl)Phosphate is a high-performance organophosphorus compound widely recognized for its exceptional stabilizing properties. This chemical is a critical additive for enhancing the durability and longevity of polymers exposed to demanding environmental conditions. It is primarily utilized by manufacturers in the plastics, synthetic fiber, and specialty chemical industries seeking to improve product performance and thermal-oxidative stability.

Application

• Polymer Stabilizer: Acts as a highly effective secondary antioxidant and metal deactivator in polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal degradation during processing and end-use.
• Synergistic Additive Systems: Used in combination with primary phenolic antioxidants (e.g., hindered phenols) to create robust stabilization packages for long-term thermal aging resistance.
• Fiber and Film Production: Incorporated into polypropylene and polyethylene fibers and films to maintain strength, color, and clarity under high-temperature processing and UV exposure.
• Adhesives and Sealants: Enhances the thermal stability of hot-melt adhesives and various sealant formulations, preventing premature breakdown and extending shelf life.
• Lubricant and Fuel Additive: Serves as an antioxidant and anti-wear agent in advanced lubricating oils and greases, as well as a stabilizer in certain fuel formulations.

Basic Information

Product Name	Sodium 2,2'-Methylene-Bis-(4,6-Di-tert-Butylphenyl)Phosphate
CAS No.	85209-91-2
Molecular Formula	C33H51O4PNa
Molecular Weight	565.72 g/mol
Synonyms	Sodium 2,2'-Methylenebis(4,6-di-tert-butylphenyl) phosphate; Sodium bis(4,6-di-tert-butyl-2-methylphenyl) phosphate; Irgastab NA 11; ADK STAB NA-11; Songnox 9228; Hostanox PAR 24; Phosphonic acid, P,P'-[methylenebis(4,6-di-1,1-dimethylethyl-2,1-phenylene)] ester, sodium salt; Sodium salt of 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphite
EINECS	286-344-5

Quality Control

Our production of Sodium 2,2'-Methylene-Bis-(4,6-Di-tert-Butylphenyl)Phosphate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for assay and purity, to ensure it meets the high standards required for polymer stabilization. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

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 hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 1.0 %
Sodium Content	3.8 - 4.2 %
pH (1% Aqueous Solution)	8.0 - 10.0
Melting Point	> 300 °C

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