Description

Ethyl[Bis(Tri-Methylsilyl)]Phosphite is a specialized organosilicon phosphite ester, a key reagent in modern synthetic chemistry. This compound is valued for its role as a highly effective silylating and phosphorylating agent, enabling critical transformations in the synthesis of complex molecules. It is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for developing active ingredients and novel silicon-containing compounds.

Application

• As a silylating agent in the protection of hydroxyl and other functional groups during multi-step organic synthesis.
• As a key phosphitylating reagent in the synthesis of nucleoside phosphoramidites for oligonucleotide (DNA/RNA) production.
• In the preparation of phosphorus-containing ligands for catalysis and coordination chemistry.
• For the modification of surfaces and polymers to introduce silicon and phosphorus functionalities.
• In agrochemical research for the synthesis of novel pesticide and herbicide intermediates.
• As a stabilizer and intermediate in the production of specialty silicones and flame retardants.

Basic Information

Product Name	Ethyl[Bis(Tri-Methylsilyl)]Phosphite
CAS No.	39059-59-1
Molecular Formula	C8H23O3PSi2
Molecular Weight	254.41 g/mol
Synonyms	Ethyl Bis(trimethylsilyl) Phosphite; Bis(trimethylsilyl) Ethyl Phosphite; Phosphorous Acid, Ethyl Ester, Bis(trimethylsilyl) Ester; (Ethoxy)bis(trimethylsilyloxy)phosphine; O,O-Bis(trimethylsilyl) O-Ethyl Phosphite; TMS Phosphite Ester; Silyl Phosphite Reagent
EINECS	Contact for details

Quality Control

Our Ethyl[Bis(Tri-Methylsilyl)]Phosphite is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including NMR, GC, and HPLC, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at 15-25°C under an inert atmosphere (e.g., nitrogen or argon) due to its moisture-sensitive and easily oxidized nature. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (NMR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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