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

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

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

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

CAS: 839-90-7
Hydroxyl Value: 640±10 (mgKOH /g)
Molecular Formula: C9H15N3O6
Molecular Weight: 261.23
EINECS: 212-660-9
Storage Period：1 year

Synonyms: THEIC, Tris(2-hydroxyethyl) Isocyanurate, Tris 2-hydroxyethyl Isocyanurate

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.

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