p-Phenylene diisocyanate (CAS 104-49-4) is an organic compound characterized by its two isocyanate functional groups attached to a phenylene ring. It appears as a colorless to pale yellow liquid and is known for its strong reactivity, particularly with nucleophiles, due to the presence of the isocyanate groups. This compound is primarily used in the production of polyurethane elastomers, coatings, and adhesives, where it contributes to the formation of cross-linked structures that enhance material durability and flexibility. p-Phenylene diisocyanate is also recognized for its potential health hazards; it can be an irritant to the skin, eyes, and respiratory system, and prolonged exposure may lead to sensitization or other adverse effects. Therefore, handling this substance requires appropriate safety measures, including the use of personal protective equipment and adequate ventilation. Its reactivity and toxicity necessitate careful management in industrial and laboratory settings.

p-Phenylene diisocyanate

104-49-4: 1,4-Benzenediisocyanate, 1,4-Diisocyanato-Benzen, 1,4-Diisocyanatobenzene, 1,4-Phenylene Diisocyanate, 1,4-Phenylenebis(isocyanate), 1,4-diisocyanato-Benzene, 4,4'-Phenyl Isocyanate, Benzene 1,4-Diisocyanate, Benzene, 1,4-Diisocyanato-, Hydroquinone, diisocyanate, Isocyanic acid, p-phenylene ester, Isocyanicacid,P-Phenyleneester, NSC 94776, P-Phenyleneisocyanate, Phenylene-1,4-diisocyanate, Ppdi, p-Phenyl Diisocyanate, p-Phenylene isocyanate, p-Phenylene diisocyanate

1,4-Phenylene Diisocyanate

1,4-Phenylene diisocyanate is a reactive compound that reacts with an amine to form a urea linkage. The reaction mechanism of 1,4-Phenylene diisocyanate with an amine and hydrochloric acid is as follows:

The specific antibody recognizes the urea linkage and binds to it. This binding results in the formation of a precipitate that can be detected by gravimetric analysis. The precipitate can also be observed under electron microscopy as boron nitride crystals. The boron nitride crystals are formed due to hydrogen bonding interactions between the 1,4-phenylene diisocyanate molecules and water vapor.

CAS 104-49-4: p-Phenylene diisocyanate

1,4-Phenylene Diisocyanate

Ref: IN-DA003DPD

1,4-Phenylene Diisocyanate

Ref: 3B-P1640

1,4-Phenylene diisocyanate

Ref: 3D-FP62960

1,4-Phenylene diisocyanate

Ref: 08-07-0101