As a procurement manager or R&D scientist in the chemical industry, selecting the correct grade of Hydroxyl Silicone Oil (OH Polymer) is crucial for achieving optimal product performance. This silicone fluid, identified by CAS 70131-67-8, is a cornerstone in many advanced material formulations, from high-performance sealants to specialized textile finishes. Understanding its nuances will empower you to make informed purchasing decisions and secure a reliable supply chain.

What is Hydroxyl Silicone Oil?

Hydroxyl Silicone Oil, often referred to as OH Polymer or silanol-terminated polydimethylsiloxane, is characterized by the presence of hydroxyl (-OH) functional groups at both ends of the silicone polymer chain. This structure imparts unique reactivity and properties, making it distinct from other silicone fluids. As a leading manufacturer and supplier in China, we specialize in producing high-purity grades of this essential chemical auxiliary.

Key Properties for Procurement:

  • Viscosity: OH polymers are available in a wide range of viscosities, from very low (e.g., 40 cSt) to very high (e.g., 300,000 cSt). The choice of viscosity significantly impacts the application. Lower viscosities are often preferred for surface treatments and as reactive diluents, while higher viscosities are used as base polymers for elastomers and adhesives. When you buy hydroxyl silicone oil, always specify the required viscosity range to your supplier.
  • OH Content: The percentage of hydroxyl groups in the polymer dictates its reactivity. Higher OH content generally leads to faster curing or cross-linking reactions. This is a critical parameter for formulators working with RTV (Room Temperature Vulcanizing) silicones.
  • Purity: For demanding applications like electronics or advanced coatings, high purity is non-negotiable. Ensure your manufacturer can provide certificates of analysis confirming low volatile content and minimal impurities.

Applications Driving Demand:

The versatility of Hydroxyl Silicone Oil means it finds application across numerous industries. When sourcing, consider your primary use case:

  • Silicone Rubber and Sealants: This OH polymer is a foundational component in condensation cure RTV silicone rubber and sealants. It reacts with cross-linkers to form flexible, durable elastomers. Manufacturers often seek reliable suppliers for consistent quality needed in construction sealants and electronic potting compounds.
  • Textile and Leather Finishing: In textile applications, hydroxyl silicone oils act as softeners and finishing agents, imparting a desirable hand feel and improving wash durability. Procurement managers frequently look for suppliers offering cost-effective solutions for large-scale textile treatment.
  • Coatings and Adhesives: Its unique properties make it suitable for specialty coatings and as an additive in various adhesive formulations, enhancing flexibility and temperature resistance.
  • Other Industrial Uses: Applications also extend to plastic processing, oil drilling auxiliaries, and water treatment chemicals, showcasing its broad utility.

Procurement Strategies:

When looking to buy Hydroxyl Silicone Oil, consider these strategic steps:

  • Identify Reputable Suppliers: Partner with experienced manufacturers and suppliers who can guarantee product quality, consistent supply, and competitive pricing. Look for suppliers with ISO certifications and a strong track record.
  • Request Samples: Always obtain samples for testing in your specific application before committing to bulk purchases. Evaluate viscosity, OH content, and overall performance.
  • Understand Pricing and MOQs: Clarify the price per kilogram and the Minimum Order Quantity (MOQ) from potential suppliers. For large-volume needs, negotiate bulk pricing.

NINGBO INNO PHARMCHEM CO.,LTD. is your go-to manufacturer and supplier for high-quality Hydroxyl Silicone Oil. We are committed to providing the chemical industry with reliable raw materials that meet stringent quality standards. Contact us today to discuss your requirements and request a quote for your next purchase of OH Polymer.