Description

Methylsilanol CAS NO 18089-54-8 is a versatile organosilicon compound characterized by its silanol (Si-OH) functional group. This unique structure makes it a valuable intermediate and functional ingredient for modifying surface properties and enhancing material performance. It is particularly sought after by manufacturers in the personal care, pharmaceutical, and specialty chemical industries. Its utility stems from its ability to act as a coupling agent, adhesion promoter, and surface modifier.

Application

• Personal Care & Cosmetics: Used as a conditioning agent and film-former in hair care products, skin creams, and anti-aging formulations to improve texture and provide a silky feel.
• Pharmaceutical Intermediates: Serves as a key building block in the synthesis of more complex organosilicon molecules used in drug delivery systems and active pharmaceutical ingredients (APIs).
• Surface Treatment & Coatings: Acts as an adhesion promoter and cross-linking agent in primers, paints, and coatings to improve durability and water resistance.
• Silicone Resin Modification: Employed as a reactive monomer or chain terminator in the production of silicone resins and elastomers, influencing their flexibility and curing properties.
• Textile & Fiber Processing: Applied as a softener and water-repellent finish for fabrics and non-woven materials.
• Adhesives & Sealants: Enhances the bonding strength and environmental resistance of silicone-based and hybrid adhesive formulations.

Basic Information

Product Name	Methylsilanol
CAS No.	18089-54-8
Molecular Formula	C3H10O2Si
Molecular Weight	106.20 g/mol
Synonyms	Methylsilanediol; Dimethylsilanediol; Monomethylsilanetriol; Hydroxydimethylsilanol; Dimethylsiliconediol; Dihydroxydimethylsilane; (Dimethylsilyl)diol; NSC 85512
EINECS	Contact for details

Quality Control

Our Methylsilanol is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including assay and impurity profiling, to ensure it meets the high standards required for industrial and pharmaceutical applications. Certificates of Analysis (COA) documenting purity, identity, and other critical parameters are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its reactive silanol group, it is recommended to store the product under an inert atmosphere (e.g., nitrogen) to prevent condensation reactions and maintain stability. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Refractive Index (20°C)	1.390 - 1.410
Density (20°C)	0.95 - 1.05 g/mL

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