Description

Poly(Methylhydrosiloxane) CAS NO 63148-57-2 is a reactive organosilicon polymer featuring methyl and hydrosilane (Si-H) functional groups along its backbone. This unique structure makes it a versatile and essential cross-linking agent and intermediate in silicone chemistry. It is primarily used in the production of silicone elastomers, release coatings, and as a surface treatment agent. Industries such as adhesives & sealants, textiles, and personal care rely on its consistent performance for creating durable, water-repellent, and thermally stable materials.

Application

• Cross-linking Agent for Silicone Elastomers: Acts as a key hydrosilylation component in heat-cured (HCR) and liquid silicone rubber (LSR) formulations.
• Silicone Release Coatings: Used in the production of release liners for labels, tapes, and adhesive products.
• Surface Modification & Water Repellency: Imparts hydrophobic properties to textiles, paper, and various substrates.
• Intermediate for Silicone Fluids & Resins: Serves as a building block for manufacturing modified silicone oils, gums, and specialty resins.
• Adhesives and Sealants: Functions as a curing agent and modifier to enhance adhesion and flexibility.
• Personal Care Ingredients: Used in the synthesis of silicone conditioning agents for hair and skin care products.

Basic Information

Product Name	Poly(Methylhydrosiloxane)
CAS No.	63148-57-2
Molecular Formula	(C3H10OSi)n
Molecular Weight	Varies (Polymer)
Synonyms	PMHS; Methylhydrosiloxane Polymer; Methylhydrosiloxane-Dimethylsiloxane Copolymer; Poly(methyl hydrogen siloxane); Hydrosilicone Oil; Hydrogen-Containing Silicone Oil; Methyl Hydrogen Polysiloxane; Siloxanes and Silicones, Me hydrogen
EINECS	Contact for details

Quality Control

Our Poly(Methylhydrosiloxane) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as active hydrogen content, viscosity, and purity. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., nitrogen) is recommended. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Active Hydrogen Content	Contact for details
Viscosity (25°C)	Contact for details
Specific Gravity (25°C)	Contact for details
Refractive Index (n20D)	Contact for details

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