Description

Bis (Tridecyl) Hydrogen Phosphite is a high-performance organophosphite compound widely used as a stabilizer and antioxidant. Its primary value lies in its ability to effectively inhibit thermal and oxidative degradation in various polymer systems, thereby extending product lifespan and maintaining material integrity. This chemical is essential for manufacturers in the plastics, lubricant, and rubber industries seeking to enhance the durability and performance of their formulations. The compound is supplied under strict quality control to ensure consistent efficacy and reliability for industrial applications.

Application

• Primary use as a secondary antioxidant and process stabilizer in polyolefins (PP, PE) and other polymers.
• Effective hydroperoxide decomposer in synthetic lubricants and greases to prevent oxidation and viscosity increase.
• Used as a color and molecular weight stabilizer during the high-temperature processing of engineering plastics.
• Acts as a synergistic co-stabilizer in combination with primary phenolic antioxidants for enhanced polymer protection.
• Employed in the formulation of adhesives and elastomers to improve resistance to heat aging.
• Application in PVC stabilizer systems to improve long-term thermal stability.
• Used in the production of specialty chemicals as an intermediate for further phosphite derivatives.

Basic Information

Product Name	Bis (Tridecyl) Hydrogen Phosphite
CAS No.	36432-46-9
Molecular Formula	C26H55O3P
Molecular Weight	446.69 g/mol
Synonyms	Di(tridecyl) hydrogen phosphite; Diisotridecyl phosphite; Bis(tridecyl) phosphite; Hydrogen di(tridecyl) phosphite; Phosphorous acid, diisotridecyl ester; Tridecyl alcohol, hydrogen phosphite; Antioxidant TNPP alternative; Stabilizer 36432-46-9
EINECS	Contact for details

Quality Control

Our Bis (Tridecyl) Hydrogen Phosphite is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and acid value, guaranteeing consistent performance as a polymer stabilizer. Certificates of Analysis (COA) documenting these results are available upon request. We are committed to supplying material that aligns with global industry standards for chemical intermediates and polymer additives.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0 %
Acid Value	≤ 1.0 mg KOH/g
Color (APHA)	≤ 50
Moisture (KF)	≤ 0.1 %
Refractive Index (n20D)	1.455 - 1.465
Density (20°C)	0.89 - 0.91 g/mL

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