Description

Diethyl tert-Butylphosphonate is a high-purity organophosphorus compound, specifically a phosphonate ester, serving as a versatile and critical intermediate in advanced chemical synthesis. Its primary value lies in its role as a key precursor for the preparation of tert-butylphosphine ligands and other functionalized phosphorus-containing molecules, which are essential in catalysis and materials science. This product is particularly vital for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require precise building blocks for developing new catalysts, active ingredients, and advanced materials.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring phosphorus-based functional groups or tert-butylphosphine ligand systems.
• Catalyst Ligand Precursor: Used to synthesize sophisticated tert-butylphosphine ligands, which are employed in homogeneous catalysis, including cross-coupling reactions (e.g., Suzuki, Heck) critical for fine chemical and pharmaceutical manufacturing.
• Agrochemical Synthesis: Serves as an intermediate in the production of novel herbicides, insecticides, and plant growth regulators that utilize organophosphorus chemistry.
• Material Science Research: Employed in the development of flame retardants, stabilizers, and as a modifying agent for polymers and other advanced materials.
• Organic Synthesis Reagent: Functions as a Horner-Wadsworth-Emmons (HWE) reagent or a phosphorus ylide precursor for olefination reactions to construct complex organic molecules.
• Chemical Research & Development: An essential tool for academic and industrial R&D laboratories exploring new synthetic methodologies and organophosphorus chemistry.

Basic Information

Item	Details
Product Name	Diethyl tert-Butylphosphonate
CAS No.	19935-93-4
Molecular Formula	C8H19O3P
Molecular Weight	194.21 g/mol
Synonyms	Diethyl (tert-butyl)phosphonate; (tert-Butyl)phosphonic Acid Diethyl Ester; Diethyl P-tert-Butylphosphonate; Diethyl (1,1-Dimethylethyl)phosphonate; tert-Butyldiethyl Phosphonate; EINECS 243-415-9; Phosphonic acid, (1,1-dimethylethyl)-, diethyl ester
EINECS	243-415-9

Quality Control

Our Diethyl tert-Butylphosphonate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including GC, NMR, and titration methods, to confirm identity, assay, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full transparency and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.425 - 1.435
Density (20°C)	0.980 - 1.010 g/mL

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