Description

Arsenic Acid Tris(Trimethylsilyl) Ester is a specialized organosilicon reagent containing an arsenic(V) center. This compound is valued for its role as a versatile silylating agent and a protected source of arsenic acid in advanced synthetic chemistry. It is primarily utilized by researchers and process chemists in the pharmaceutical, agrochemical, and materials science sectors for the development of novel compounds and functional materials.

Application

• Silylating Agent: Used to introduce trimethylsilyl (TMS) protecting groups onto sensitive functional groups like hydroxyls or acids in complex organic syntheses.
• Pharmaceutical Intermediate: Serves as a key building block in the research and development of new active pharmaceutical ingredients (APIs), particularly in metalloid-based drug discovery.
• Agrochemical Synthesis: Employed in the synthesis of novel herbicides, insecticides, or fungicides where arsenic-containing motifs are explored for biological activity.
• Materials Science Precursor: Acts as a precursor for depositing arsenic-containing thin films or for modifying surface properties in advanced material applications.
• Laboratory Reagent: Utilized in research laboratories for methodological development in organometallic and main-group chemistry.
• Catalyst or Ligand Modification: Can be used to modify catalysts or create novel ligand systems for coordination chemistry.

Basic Information

Product Name	Arsenic Acid Tris(Trimethylsilyl) Ester
CAS No.	17921-76-5
Molecular Formula	C9H27AsO3Si3
Molecular Weight	326.46 g/mol
Synonyms	Tris(trimethylsilyl) arsenate; Arsenic acid trimethylsilyl ester; Tris(trimethylsilyl) orthoarsenate; Trimethylsilyl arsenate; As(O-Si(CH3)3)3; TMS-arsenate
EINECS	Contact for details

Quality Control

Our Arsenic Acid Tris(Trimethylsilyl) Ester is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including NMR (¹H, ¹³C), FT-IR, and GC or HPLC analysis to verify identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Purity (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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