4-(Trifluoromethoxy)phenyl isocyanate, CAS No. 35037-73-1

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35037-73-1

Catalog No. EBD9768

CAS 35037-73-1

Name 4-(Trifluoromethoxy)phenyl isocyanate

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Basic Information

Synonyms: 1-Isocyanato-4-Trifluoromethoxy-Benzene p-(trifluoromethoxy)phenylisocyanate 1-isocyanato-4-(trifluoromethoxy)-benzen 4-(trifluoromethoxy)phnylisocyanate 4-Trifluromethoxylphenylisocyanate 4-TrifluoromethoxyPhenylisocyanate 4-(Trifluoromethoxy)phenylisocyanate 1-isocyanato-4-(trifluoromethoxy)benzene

Molecular Formula: C8H4F3NO2

Molecular Weight: 203.12

MDL Number: MFCD00035702

Categories: Materials Chemistry > Polymers and Macromolecular Materials > Polyurethane Precursors

Product Description:

4-(Trifluoromethoxy)phenyl isocyanate is an aromatic isocyanate compound characterized by a trifluoromethoxy (-OCF₃) substituent on the phenyl ring. This structure imparts unique chemical and physical properties, including enhanced hydrophobicity and chemical stability compared to non-fluorinated analogs. Its primary industrial application is as a key monomer in the synthesis of polyurethane materials. The isocyanate group (-NCO) readily reacts with polyols to form urethane linkages. The incorporation of the trifluoromethoxy group into the polymer backbone can significantly improve the material's performance, such as increasing its resistance to solvents, chemicals, and weathering, and lowering its surface energy. These modified polyurethanes are valuable for high-performance coatings, adhesives, sealants, and elastomers (CASE) applications. From a synthetic chemistry perspective, it serves as a specialized building block for introducing the 4-(trifluoromethoxy)phenyl moiety into more complex molecules via reactions of its highly electrophilic isocyanate group with nucleophiles like amines and alcohols.

Physical Properties

Melting Point: -29°C

Boiling Point: 78 °C (22 mmHg)

Flash Point: 69 °C

Density: 1.346 g/mL at 25 °C(lit.)

Refractivity: n20/D 1.458(lit.)

Storage: Refrigerator (+4°C)

Safety Information

Packing Level: III

Hazard Category: 6.1

Transport Codes: 2206PSN1B