NDI

NDI (1,5-Naphthalene Diisocyanate)

Synonyms: 1,5-Naphthalenediisocyanate; Naphthalene-1,5-diisocyanate

Molecular Formula: C₁₂H₆N₂O₂

Molecular Weight: 210.2 g/mol

Description: NDI is a white to off-white crystalline solid aromatic diisocyanate with high thermal stability and reactivity. It is a premium raw material for producing high-performance polyurethane elastomers that exhibit exceptional dynamic properties, heat resistance, and mechanical strength.

Key Properties:

Appearance: White to off-white crystalline solid
NCO Content: ≈39.9–40.1%
Purity: ≥99.5% (typical commercial grade)
Melting Point: ≈127–130°C
Density (solid, 20°C): ≈1.35 g/cm³

Applications: NDI is primarily used in cast polyurethane elastomers and prepolymers, delivering outstanding abrasion resistance, tear strength, low heat buildup, and high dynamic load-bearing capacity. These products are ideal for demanding applications such as:

Industrial rollers and wheels (printing, conveyor, forklift)
Vibration dampers and shock absorbers
Mining screens and sieves
High-performance seals and gaskets
Automotive and mechanical engineering components requiring superior durability

Safety Notes:

NDI monomer is highly reactive and toxic. It may cause severe respiratory sensitization, skin irritation, and eye damage. Use in well-ventilated areas with appropriate personal protective equipment and strict handling protocols.

NDI

NDI

Safety Notes:

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