Description

1,3-Bis(3-Hydroxypropyl)Tetramethyldisiloxane is a bifunctional organosilicon compound featuring terminal hydroxyl groups linked by a flexible disiloxane bridge. This unique structure makes it a versatile reactive intermediate and crosslinking agent in advanced material synthesis. It is essential for manufacturers in the silicone polymer, personal care, and specialty coatings industries seeking to incorporate hydrophilic and reactive sites into their formulations.

Application

• Silicone Polymer Modification: Serves as a chain extender or crosslinker to introduce polar hydroxypropyl groups, enhancing compatibility with organic matrices and improving adhesion properties.
• Personal Care Ingredients: Used in the synthesis of silicone polyethers and other derivatives that function as emulsifiers, emollients, and conditioning agents in cosmetics and skincare products.
• Release Coatings & PSA Modifiers: A key monomer for producing modified silicone release liners and pressure-sensitive adhesives (PSAs) with tailored release forces.
• Hybrid Material Synthesis: Acts as a coupling agent or precursor in sol-gel processes for creating organic-inorganic hybrid (OIH) materials with specific mechanical and surface properties.
• Lubricant & Grease Additives: Employed to synthesize functional silicone fluids that improve lubricity, thermal stability, and water resistance in specialty lubricants.
• Pharmaceutical Intermediates: Utilized in the production of siloxane-based carriers or excipients for controlled drug delivery systems.

Basic Information

Product Name	1,3-Bis(3-Hydroxypropyl)Tetramethyldisiloxane
CAS No.	18001-97-3
Molecular Formula	C10H28O3Si2
Molecular Weight	252.50 g/mol
Synonyms	1,3-Bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane; α,ω-Bis(3-hydroxypropyl)tetramethyldisiloxane; Bis(3-hydroxypropyl)tetramethyldisiloxane; 3,3'-(Tetramethyldisiloxane-1,3-diyl)di(propan-1-ol); Tetramethyl-1,3-bis(3-hydroxypropyl)disiloxane; Hydroxypropyl-terminated disiloxane; Dihydroxypropyl tetramethyldisiloxane
EINECS	Contact for details

Quality Control

Our 1,3-Bis(3-Hydroxypropyl)Tetramethyldisiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	0.93 - 0.97 g/cm³

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