Description

Sodium Bis(p-tert-Butylphenyl) Phosphate is a specialized organophosphate salt widely utilized as a high-performance additive and intermediate. Its primary value lies in its ability to function as a stabilizer, antioxidant, and flame retardant synergist in demanding polymer systems. This compound is essential for manufacturers in the plastics, lubricant, and specialty chemical industries seeking to enhance material longevity and performance under thermal and oxidative stress.

Application

• Polymer Stabilizer: Acts as a secondary antioxidant and thermal stabilizer in polyolefins (e.g., PP, PE), PVC, and engineering plastics to prevent degradation during processing and end-use.
• Flame Retardant Synergist: Used in combination with halogenated or phosphorus-based flame retardants to improve efficacy in wire & cable insulation, electronic housings, and construction materials.
• Lubricant and Grease Additive: Functions as an anti-wear and extreme pressure (EP) additive, as well as an antioxidant, in synthetic lubricants and industrial greases.
• Metal Processing Fluid: Employed as a corrosion inhibitor and stabilizer in metalworking fluids and hydraulic systems.
• Synthetic Intermediate: Serves as a key precursor in the synthesis of more complex phosphate esters and other specialty chemicals.

Basic Information

Product Name	Sodium Bis(p-tert-Butylphenyl) Phosphate
CAS No.	10491-31-3
Molecular Formula	C20H27NaO4P
Molecular Weight	385.38 g/mol
Synonyms	Sodium Di(p-tert-butylphenyl) Phosphate; Bis(4-tert-butylphenyl) Phosphate Sodium Salt; Phosphoric Acid, Bis(4-(1,1-Dimethylethyl)phenyl) Ester, Sodium Salt; Sodium 4-tert-Butylphenyl Phosphate; Irgastab B 561; Na-TBPP; Antioxidant 2112
EINECS	234-017-9

Quality Control

Our Sodium Bis(p-tert-Butylphenyl) Phosphate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 product is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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