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1,5-Naphthalene Diisocyanate (NDI)

Molecular formula: C12H6N2O
Molecular weight: 210.19
CAS number: 3173-72-6
Structural formula:

Appearance: White to light yellow flaky crystal
Melting point: 126-127°C
Boiling point: 167°C (5 X 1.33 KPa)
Density: 1.42-1.45g/cm3