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Tris(2-hydroxyethyl) isocyanurate

CAS Number
839-90-7
EC Number
212-660-9
Chemical Formula
C9H15N3O6
Molecular Weight
261.23 g/mol

Description

Tris(2-hydroxyethyl) isocyanurate (CAS 839-90-7 ), commonly known as THEIC, is a triazine-based triol used as a reactive intermediate and crosslinking agent across polymer and personal care applications. Its three hydroxyl groups make it a functional building block for resin synthesis, ester formation, and network curing systems. In wire and cable insulation, it is reacted with polyester or polyimide systems. This process produces high-temperature magnet wire enamels that meet demanding thermal class requirements. Polyurethane and alkyd resin formulators incorporate it as a polyol component to improve heat resistance. It also enhances mechanical durability in coatings and adhesives. In personal care formulations, it functions as a humectant and emulsifier in skin conditioning products where moisture retention is a priority. Formulation stability remains a key benefit in these applications. Crosslinking applications in powder coatings and specialty resins also draw on its reactivity with isocyanates and carboxylic acids. This builds cured networks with elevated thermal performance. The product is supplied as a white crystalline powder. Standard commercial grades include technical and high-purity specifications for industry. Purity levels are typically at 98% or above confirmed by HPLC. Packaging ranges from kilogram-scale bags to bulk quantities suited for industrial resin production and large-scale manufacturing needs. Contact us for supply of Tris(2-hydroxyethyl) isocyanurate Request Quote

Other Names (Synonyms)

Theic | Tris(hydroxyethyl) cyanurate | Tris(2-hydroxyethyl)cyanurate | Tris(hydroxyethyl) isocyanurate | Isocyanuric acid tris(2-hydroxyethyl) ester | Tris(beta-hydroxyethyl) isocyanurate | 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-tris(2-hydroxyethyl)- | s-Triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-tris(2-hydroxyethyl)-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point135 °C
Boiling Point526.7±45.0 °C(Predicted)
Density1.498±0.06 g/cm3(Predicted)
Flash Point241°C
Appearancewhite powder
ColorWhite to Off-White
FormSolid
Water Solubility572g/L at 20℃
Vapor Pressure0.001Pa at 50℃
pH7 (100g/l, H2O, 20℃)
Log P-1.63 at 23℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29336980
Storage Class11 - Combustible Solids
WGK (Germany)3