Tris(2-hydroxyethyl) isocyanurate

CAS Number
839-90-7
EC Number
212-660-9
Abbreviation
THEIC

What is Tris(2-hydroxyethyl) isocyanurate?

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.

Where is Tris(2-hydroxyethyl) isocyanurate used?

  • Resin synthesis: functional building block via three hydroxyl groups
  • Wire and cable insulation: reacted with polyester or polyimide systems
  • Polyurethane and alkyd resins: polyol component for heat resistance
  • Coatings and adhesives: mechanical durability
  • Personal care: humectant and emulsifier in skin conditioning products
  • Powder coatings and specialty resins crosslink with isocyanates and carboxylic acids.

Commercial specifications

  • Purity typically 98% or above, confirmed by HPLC
  • Packaging from kilogram-scale bags to bulk quantities

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)-

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What are the physical properties of Tris(2-hydroxyethyl) isocyanurate?

Melting Point 135 °C
Boiling Point 526.7±45.0 °C(Predicted)
Density 1.498±0.06 g/cm3(Predicted)
Flash Point 241°C
Appearance white powder
Color White to Off-White
Form Solid
Water Solubility 572g/L at 20℃
Vapor Pressure 0.001Pa at 50℃
pH 7 (100g/l, H2O, 20℃)
Log P -1.63 at 23℃

How is Tris(2-hydroxyethyl) isocyanurate classified and handled safely? Learn More

Warning
GHS07· Irritant

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.

Which trade and regulatory codes apply to Tris(2-hydroxyethyl) isocyanurate?

HS Code 29336980
Storage Class 11 - Combustible Solids
WGK (Germany) 3
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