1,3,5-Tris(2-hydroxyethyl)cyanuric acid CAS 839-90-7

What is 1,3,5-Tris(2-hydroxyethyl)cyanuric acid CAS 839-90-7？ 1,3,5-Tris(2-hydroxyethyl)cyanuric acid, also known as THEIC or Tris(2-hydroxyethyl) Isocyanurate, is a multifunctional intermediate widely used in polymer and resin synthesis.With its excellent heat resistance, flame retardancy, and crosslinking capability, THEIC plays a vital role in producing high-performance insulation materials, flame-retardant coatings, and thermosetting resins. Specification   ITEM STANDARD Appearance White Crystal powder Melting point 133.5-137.0℃ Hydroxyl Value 640±10 (mgKOH /g) Acidity ≤1.00 (mgKOH/g) PH Value 6.5-7.3 Loss on drying ≤0.2 % Purity ≥99% Applications 1. Electrical Insulation Materials THEIC is an essential intermediate in the production of polyester imide (PEI) and polyimide resins, which are used in high-temperature electrical enamels, wire coatings, and insulating varnishes. It provides superior dielectric strength and long-term thermal resistance. 2. Flame-Retardant Plastics and Coatings Due to its high nitrogen and hydroxyl content, Tris(2-hydroxyethyl) Isocyanurate enhances flame retardancy in polyurethane, epoxy, and polyester systems. It is widely applied in automotive coatings, powder coatings, and electronic encapsulation materials. 3. Crosslinking Agent THEIC (CAS 839-90-7) acts as a crosslinking monomer in thermosetting polymers. It improves chemical resistance, adhesion, and mechanical properties of coatings, adhesives, and composites. 4. Modifier for Polyester and Epoxy Resins In resin formulation, Tris 2-hydroxyethyl Isocyanurate introduces rigidity and enhances heat deformation resistance, making it valuable in industrial coatings and engineering plastics. Features Excellent thermal resistance and oxidation stability. High crosslinking reactivity due to multiple hydroxyl groups. Improves flame retardancy and electrical insulation. Compatible with various resin systems (polyester, polyurethane, epoxy). Contributes to longer service life of end products under high temperature. Why Choose Us as Your THEIC Supplier? We provide high-purity THEIC (CAS 839-90-7) with consistent quality, ensuring reliable performance in your formulations. Our technical team offers customized solutions for resin manufacturers, coating formulators, and electronic material producers. Whether you need bulk quantities of Tris(2-hydroxyethyl) Isocyanurate or tailored packaging for specialty applications, we guarantee stable supply, competitive pricing, and full technical support. Packaging 25kg/bag