Description

Dimethylsiloxane, Methylphenyl, Hydroxy-Term., Potassium is a specialized organosilicon compound, specifically a potassium salt of a hydroxy-terminated methylphenyl silicone fluid. This product is valued for its unique combination of silicone backbone stability and the reactivity of its terminal potassium silanolate groups, enabling it to act as an efficient catalyst or reactive intermediate. It is essential for manufacturers in the silicone polymer, specialty coatings, and high-performance materials sectors seeking to develop products with enhanced thermal stability, release properties, or tailored surface characteristics.

Application

• As a catalyst or initiator in the production of specialty silicone polymers and copolymers.
• In the formulation of high-temperature resistant coatings and release agents for industrial applications.
• As a key intermediate for the synthesis of phenyl-modified silicone fluids and resins with improved optical and thermal properties.
• In the manufacture of silicone-based pressure-sensitive adhesives (PSAs) and sealants requiring specific rheological control.
• For research and development of advanced composite materials where silicone modification is needed.
• Potential use in electronic encapsulants and potting compounds due to the phenyl group's contribution to thermal and radiation stability.

Basic Information

Product Name	Dimethylsiloxane, Methylphenyl, Hydroxy-Term., Potassium
CAS No.	68440-74-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Potassium hydroxy-terminated methylphenyl dimethylsiloxane; Potassium methylphenyl siliconeate; Polydimethylsiloxane, hydroxy-terminated, methylphenyl, potassium salt; Potassium (methylphenyl)(hydroxy)dimethylsiloxane copolymer; Silicone fluid, potassium-terminated, methylphenyl; Potassium silanolate, methylphenyl dimethylsiloxane; Potassium salt of hydroxy-terminated methylphenyl polysiloxane
EINECS	Contact for details

Quality Control

Our Dimethylsiloxane, Methylphenyl, Hydroxy-Term., Potassium is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and purity. Certificates of Analysis (COA) detailing key parameters such as potassium content, viscosity, hydroxyl value, and phenyl content are available upon request. We adhere to relevant industry standards to support our customers in demanding applications.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and reacts with strong acids. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from moisture and carbon dioxide. Isolate from incompatible materials such as strong acids and oxidizers.

Specification

Item	Specification
Appearance	Viscous liquid or paste
Color	Colorless to pale yellow
Identification (IR)	Conforms to structure
Potassium Content	Contact for details
Viscosity (25°C)	Contact for details
Hydroxyl Value	Contact for details
Phenyl Content	Contact for details
Water Content	< 0.5%

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