Description

Di-tert-Butyl Phosphite is a specialized organophosphorus compound widely used as a high-performance intermediate and stabilizer. Its primary value lies in its ability to act as an effective antioxidant and ligand in various synthetic and industrial processes. This product is essential for manufacturers in the polymer, agrochemical, and pharmaceutical sectors seeking to enhance product stability and performance.

Application

• As a stabilizer and antioxidant in polymer production, particularly for polyolefins and PVC, to prevent thermal and oxidative degradation.
• As a key chemical intermediate in the synthesis of organophosphorus ligands for catalysis and metal complexation.
• In the production of agrochemicals, such as pesticides and herbicides, where it serves as a building block.
• As a reducing agent and stabilizer in various specialty chemical syntheses.
• In the formulation of lubricant and fuel additives to improve anti-wear and antioxidant properties.
• For research and development in pharmaceutical chemistry as a precursor for novel compounds.

Basic Information

Product Name	Di-tert-Butyl Phosphite
CAS No.	13086-84-5
Molecular Formula	C8H19O3P
Molecular Weight	194.21 g/mol
Synonyms	Bis(1,1-dimethylethyl) Phosphite; Di-tert-butyl Phosphonite; Phosphorous Acid Di-tert-butyl Ester; Di-t-butyl Phosphite; DTBP; tert-Butyl Phosphite (di-); Bis(tert-butoxy)phosphine Oxide (common misnomer); 2-Methyl-2-propyl Phosphite (di-)
EINECS	235-990-9

Quality Control

Our Di-tert-Butyl Phosphite is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopic methods, to ensure it meets precise purity and consistency standards. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.92 - 0.96 g/mL
Refractive Index (n20/D)	1.420 - 1.430
Water Content (KF)	≤ 0.1%

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