Description

Poly(Methyl Hydrogen Siloxane) is a reactive organosilicon polymer characterized by the presence of Si-H bonds along its backbone. This unique structure makes it a versatile intermediate and cross-linking agent critical for modifying material properties. It is essential for industries requiring precise control over hydrophobicity, release characteristics, and thermal stability. Key sectors that utilize this compound include silicone manufacturing, coatings, adhesives, and release agents.

Application

• As a key cross-linking agent in the production of silicone elastomers, rubbers, and resins.
• As a surface treatment agent to impart water repellency and release properties to textiles, paper, and fillers.
• As an intermediate for the synthesis of modified siloxanes and specialty silicone fluids.
• In the formulation of adhesives and sealants to enhance curing performance and flexibility.
• For the production of silicone-based release coatings for labels and industrial tapes.
• As a hydrophobizing agent in construction materials and coatings.
• In the manufacture of silicone surfactants and defoamers for various industrial processes.

Basic Information

Product Name	Poly(Methyl Hydrogen Siloxane)
CAS No.	26403-67-8
Molecular Formula	(C3H10OSi)n or [CH3HSiO]n
Molecular Weight	Varies (Polymer)
Synonyms	Polymethylhydrosiloxane; PMHS; Methyl Hydrogen Siloxane Homopolymer; Poly(methylsiloxane), hydrogen-terminated; Hydride-terminated polydimethylsiloxane (specific grades); Methylhydrogensiloxane polymer; Siloxanes and Silicones, Me hydrogen; Hydrogenomethylsiloxane; CAS 63148-57-2 (related linear form)
EINECS	247-693-1

Quality Control

Our Poly(Methyl Hydrogen Siloxane) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of active hydrogen content, viscosity, and purity. A Certificate of Analysis (COA) detailing all relevant 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 hygroscopic (moisture-sensitive) and may react with strong bases. Keep away from heat, sparks, and open flame. Use under an inert atmosphere such as nitrogen for long-term storage or after opening to maintain stability.

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.