Description

n-Decyl Diphenyl Phosphite is a high-performance organophosphorus compound widely utilized as a stabilizer and antioxidant in polymer chemistry. Its primary value lies in its ability to effectively inhibit thermal and oxidative degradation, thereby extending the service life and maintaining the physical properties of sensitive materials. This product is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking to enhance the durability of their formulations.

Application

• Primary stabilizer and antioxidant for polyolefins (e.g., PP, PE) and engineering plastics to prevent thermal degradation during processing.
• Effective color stabilizer in polymers susceptible to yellowing and discoloration caused by heat and light exposure.
• Key intermediate in the synthesis of more complex organophosphorus compounds for specialized applications.
• Used as a chelating agent and secondary stabilizer in combination with primary antioxidants for synergistic effects.
• Employed in the stabilization of adhesives, sealants, and synthetic lubricants to improve their oxidative stability.
• Applicable in elastomer and rubber formulations to protect against aging and maintain elasticity.

Basic Information

Product Name	n-Decyl Diphenyl Phosphite
CAS No.	3287-06-7
Molecular Formula	C22H31O3P
Molecular Weight	374.45 g/mol
Synonyms	Decyl Diphenyl Phosphite; Diphenyl Decyl Phosphite; Phosphorous Acid, Decyl Diphenyl Ester; DDP; n-Decyl Diphenyl Phosphite; Decyloxy(diphenoxy)phosphine; DDPP; CAS 3287-06-7
EINECS	221-941-8

Quality Control

Our n-Decyl Diphenyl Phosphite is manufactured under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including assay, purity, and identity confirmation, to ensure it meets precise specifications for industrial applications. A detailed Certificate of Analysis (COA) is provided with each shipment to guarantee traceability and consistency.

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 moisture to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Acidity (as H3PO4)	≤ 0.5 %
Color (APHA)	≤ 50
Refractive Index (n20D)	1.510 - 1.520
Density (20°C)	1.020 - 1.050 g/cm³

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