Description

Dilauryl Phenyl Phosphite is a high-performance organophosphite antioxidant widely used in polymer stabilization. This compound is valued for its effectiveness in preventing oxidative degradation and maintaining the physical properties of sensitive materials during processing and long-term use. It is a critical additive for manufacturers in the plastics, synthetic rubber, and specialty chemical industries seeking to enhance product durability and shelf life.

Application

• Primary antioxidant and stabilizer for polyolefins (PP, PE) and other polymers.
• Protects synthetic rubbers and elastomers from thermal and oxidative aging.
• Used in adhesive and sealant formulations to prevent viscosity increase and gelation.
• Stabilizes engineering plastics such as ABS, polycarbonate blends, and nylons during high-temperature processing.
• Functions as a color stabilizer in pigmented and clear polymer articles.
• Employed as an intermediate in the synthesis of other specialty phosphorous-based chemicals.

Basic Information

Product Name	Dilauryl Phenyl Phosphite
CAS No.	15824-34-7
Molecular Formula	C30H55O3P
Molecular Weight	494.73 g/mol
Synonyms	Phenol, dodecyl hydrogen phosphite; Phenol, dilauryl phosphite; Dilauryl phenylphosphonite; Dodecyl hydrogen phenyl phosphite; Bis(dodecyloxy)phenylphosphine oxide; Antioxidant DLTPP; Phosphorous acid, dilauryl phenyl ester; Phenyl dilauryl phosphite
EINECS	239-933-1

Quality Control

Our Dilauryl Phenyl Phosphite is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, color, and acidity are provided to guarantee batch-to-batch consistency and compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color (APHA)	≤ 50
Acidity (as Phosphorous Acid)	≤ 0.5%
Refractive Index (n20D)	1.470 - 1.480
Density (20°C)	0.930 - 0.950 g/mL

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