Description

Methylsilanediol Bis[Phosphoric Acid (2-Ethylhexyl)] Ester is a specialized organosilicon phosphate ester compound. This chemical is valued for its unique properties as a coupling agent and surface modifier, bridging organic and inorganic materials. It is primarily sought after by manufacturers in the polymer, coatings, and specialty chemical industries for applications requiring enhanced adhesion, dispersion, and compatibility.

Application

• Polymer Additive: Acts as a coupling agent and adhesion promoter in composite materials, improving the bond between fillers (e.g., glass, minerals) and polymer matrices.
• Surface Treatment Agent: Used to modify the surface energy of pigments and inorganic fillers for better dispersion and stability in coatings, inks, and plastic masterbatches.
• Lubricant & Anti-wear Additive: Functions as an extreme pressure (EP) additive and friction modifier in advanced lubricant and grease formulations.
• Corrosion Inhibitor: Provides protective film-forming properties in metalworking fluids and industrial coating systems.
• Flame Retardant Synergist: Can be employed as a component in flame-retardant systems for plastics and textiles, enhancing char formation.
• Sealant & Adhesive Formulation: Improves wetting, adhesion, and durability in high-performance silicone and polyurethane-based sealants and adhesives.

Basic Information

Product Name	Methylsilanediol Bis[Phosphoric Acid (2-Ethylhexyl)] Ester
CAS No.	19097-77-9
Molecular Formula	C19H44O8P2Si
Molecular Weight	490.56 g/mol
Synonyms	Bis(2-ethylhexyl) methylsilanediol diphosphate; Methylsilanediol dihydrogen phosphate bis(2-ethylhexyl) ester; Phosphoric acid, bis(2-ethylhexyl) ester, methylsilanediol ester; Silane coupling agent SCA-P108 (trade name); Methylsilicon phosphate ester; 2-Ethylhexyl methylsilanediol phosphate; Organosilicon phosphate; Adhesion promoter 19097-77-9
EINECS	Contact for details

Quality Control

Our production of Methylsilanediol Bis[Phosphoric Acid (2-Ethylhexyl)] Ester adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistency, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). Keep away from strong bases and incompatible materials such as strong oxidizing agents. The container must be kept tightly sealed to minimize moisture absorption.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Acid Value	≤ 5.0 mg KOH/g
Moisture (Karl Fischer)	≤ 0.5%
Specific Gravity (25°C)	1.00 - 1.10
Refractive Index (20°C)	1.440 - 1.460

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