1,3,5-Triglycidyl Isocyanurate (TGIC) – CAS 2451-62-9

Brief Description

TGIC is a trifunctional epoxy crosslinking agent, supplied as a white crystalline powder. It is the industry‑standard hardener for durable polyester powder coatings, offering outstanding weather resistance, UV stability, and thermal performance. Also used in electrical insulation, PCB inks, adhesives, and flame‑retardant systems.

Key Properties

Molecular formula: C₁₂H₁₅N₃O₆ | MW: 297.26

Melting point: 95–98 °C

Epoxy equivalent: ≤110 g/mol

Purity: ≥95% (coating grade); ≥98% (research grade)

Bulk density: ~0.8 g/cm³; density: 1.42 g/cm³

Water solubility: ~9 g/L at 25 °C

Shelf life: 365 days in cool, dry storage

Primary Applications

Powder coatings – crosslinker for carboxyl‑terminated polyesters (dosage 6–10% of resin), used on automotive parts, outdoor furniture, fences, appliances.

Electronics – insulating laminates, PCB solder‑resist inks, semiconductor encapsulants.

Adhesives & plastics – curing agent, stabilizer, chain extender.

Low‑temperature cure (135 °C) enables use on heat‑sensitive substrates (MDF, thermoplastics).

Specifications (Typical)

Parameter Value

Appearance White powder/crystals

Chlorine content ≤4,000 ppm

Volatiles ≤0.5%

Viscosity (120 °C) ≤100 mPa·s

Packaging

Available in 5 g, 25 g, 100 g, 500 g, and bulk quantities upon request.

Storage & Handling

Store in a cool, dry, well‑ventilated area away from moisture and heat. Keep container tightly closed.

Safety Brief

Toxic if swallowed or inhaled (H301+H331)

Causes skin sensitisation (H317) and serious eye damage (H318)

May cause genetic defects (H340)

Use PPE (gloves, goggles, dust mask); avoid dust inhalation

UN2811, Hazard Class 6.1, Packing Group III