Speciality Chemicals

1,3-Bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane

  • CAS No.18001-97-3
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High purity silicone end capping agent for controlling molecular weight and reactivity in industrial polymer synthesis.

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Product Technical Details

Product Overview

1,3-Bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane is a specialized organosilicon compound designed for precise modification of silicone polymers. This functional fluid features terminal hydroxypropyl groups that provide exceptional reactivity for end-capping processes. As a critical component in advanced silicone synthesis, it enables manufacturers to tailor molecular weight distribution and enhance the performance characteristics of final silicone products. Our facility produces this material under strict quality control protocols to ensure consistent batch-to-batch reliability for industrial applications.

Technical Specifications

The following table outlines the key physical and chemical properties of this high-performance siloxane modifier. Each parameter is rigorously tested to meet international standards for specialty chemical intermediates.

ParameterSpecification
AppearanceColorless or light yellow transparent liquid
Purity (Content)97% minimum
CAS Number18001-97-3
Chemical StructureHydroxypropyl functionalized disiloxane
Hazard ClassClass 3 Dangerous Goods

Industrial Applications

This compound serves primarily as an end-capping agent in the production of silicone oils and modified siloxane polymers. By reacting with terminal silanol groups, it effectively controls chain growth and prevents unwanted further polymerization. This functionality is essential for producing silicone fluids with defined viscosities and stability profiles. Additionally, the hydroxypropyl functionality offers sites for further chemical modification, making it valuable in the synthesis of reactive silicone intermediates used in coatings, adhesives, and sealants. The material is compatible with a wide range of organosilicon compounds, ensuring seamless integration into existing manufacturing workflows.

Key Advantages

  • High chemical purity ensures predictable reaction kinetics during synthesis.
  • Terminal hydroxyl groups provide excellent reactivity for capping and crosslinking.
  • Superior thermal stability suitable for demanding industrial processing conditions.
  • Consistent quality supported by comprehensive Certificate of Analysis (COA) documentation.
  • Versatile compatibility with various silicone polymer backbones and additives.

Packaging and Storage

To maintain product integrity, this chemical is available in multiple packaging configurations tailored to client needs. Laboratory scales are supplied in fluorinated bottles of 100ml, 250ml, 500ml, and 1000ml capacities. For large-scale industrial operations, standard packaging includes 25L plastic drums, 210L drums, or 1000L IBC containers. Storage requirements dictate keeping the container tightly sealed in a cool, dry environment at temperatures below 25℃. The product maintains a shelf life of one year from the production date when stored in original unopened packaging. Any material exceeding this period should undergo quality testing prior to use to confirm specification compliance.

Safety and Compliance

As a Class 3 dangerous good, this substance requires careful handling during transportation and storage. Users must adhere to all local safety regulations regarding flammable liquids. Proper personal protective equipment should be worn during handling to prevent skin contact or inhalation. Our global logistics network ensures compliant shipping procedures are followed for all international deliveries, guaranteeing safe arrival at your facility.