Description

Triethyl Phosphite is a versatile organophosphorus compound widely used as a key intermediate and reagent in organic synthesis. Its primary value lies in its role as a precursor for the production of pesticides, flame retardants, and other specialty chemicals. This product is essential for manufacturers in the agrochemical, polymer, and pharmaceutical industries seeking reliable, high-purity intermediates for their processes.

Application

• Agrochemical Synthesis: A crucial intermediate in the production of organophosphorus insecticides, herbicides, and fungicides.
• Flame Retardant Precursor: Used in the synthesis of phosphorus-based flame retardants for plastics, textiles, and construction materials.
• Pharmaceutical Intermediates: Serves as a reagent in the synthesis of various active pharmaceutical ingredients (APIs) and fine chemicals.
• Polymer Additives: Acts as a stabilizer and antioxidant in the production of polymers and synthetic lubricants.
• Chemical Synthesis: Employed as a reducing agent and a source of the phosphite moiety in Perkow and Michaelis-Arbuzov reactions.
• Catalyst and Ligand Preparation: Used in the preparation of metal complex catalysts and ligands for homogeneous catalysis.

Basic Information

Product Name	Triethyl Phosphite
CAS No.	122-52-1
Molecular Formula	C6H15O3P
Molecular Weight	166.16 g/mol
Synonyms	Phosphorous Acid Triethyl Ester; Triethoxyphosphine; Ethyl Phosphite; Triethyl Phosphonate (common misnomer); P(OEt)3; TEP; Phosphorous Acid, Triethyl Ester; Triethyl Phosphite (TEP)
EINECS	204-552-5

Quality Control

Our Triethyl Phosphite is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment aligns with ISO standards and relevant industrial specifications to meet the demanding requirements of our global B2B clientele.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat and ignition sources. Due to its nature of being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.968 - 0.975 g/mL
Refractive Index (n20D)	1.412 - 1.416
Water Content (KF)	≤ 0.1%
Acidity (as H3PO4)	≤ 0.1%

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