Description

Diisobutylchlorosilane is a highly reactive organosilicon compound primarily used as a versatile silylating agent and key intermediate in organosilicon synthesis. Its value lies in its ability to introduce the diisobutylsilyl protecting group, offering a unique steric profile for selective chemical transformations. This chemical is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and advanced materials sectors, where precise molecular modification is critical.

Application

• Pharmaceutical Intermediate: Key reagent for the protection of hydroxyl groups in complex drug synthesis, enabling selective reactions.
• Agrochemical Synthesis: Used in the production of silicon-containing pesticides and herbicides as a building block.
• Surface Modification Agent: Imparts hydrophobic properties to silica, glass, and other inorganic surfaces for advanced material applications.
• Silicone Polymer Precursor: Serves as a monomer or cross-linking agent in the synthesis of specialty silicone resins and elastomers.
• Laboratory Reagent: Employed in organic synthesis for the silylation of sensitive compounds, facilitating purification and analysis.
• Adhesive & Sealant Formulations: Acts as a coupling agent to improve adhesion between organic polymers and inorganic substrates.

Basic Information

Product Name	Diisobutylchlorosilane
CAS No.	18279-73-7
Molecular Formula	C8H19ClSi
Molecular Weight	178.77 g/mol
Synonyms	Chlorodiisobutylsilane; Diisobutylchlorosilane; Diisobutylsilyl chloride; Silane, chlorodiisobutyl-; (Isobutyl)2SiHCl; NSC 66119; Chloro-diisobutylsilane; Di-iso-butylchlorosilane
EINECS	242-160-0

Quality Control

Our Diisobutylchlorosilane is manufactured under stringent quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, NMR, and titration to verify identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and ignition sources. Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.88 - 0.92 g/mL
Refractive Index (n20D)	1.430 - 1.440
Water Content (KF)	≤ 0.1%

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