CAS 4128-73-8

4,4′-Diisocyanatodiphenyl ether

Description:

4,4′-Diisocyanatodiphenyl ether, with the CAS number 4128-73-8, is an organic compound characterized by the presence of two isocyanate functional groups attached to a diphenyl ether backbone. This substance is typically a solid at room temperature and is known for its high reactivity, particularly in the formation of polyurethanes and other polymeric materials. It exhibits good thermal stability and is resistant to various chemicals, making it suitable for applications in coatings, adhesives, and elastomers. The isocyanate groups contribute to its ability to react with alcohols and amines, facilitating the formation of urethane linkages. However, it is important to handle this compound with care, as it can be hazardous; it is known to be an irritant to the skin, eyes, and respiratory system, and appropriate safety measures should be taken during its use. Overall, 4,4′-Diisocyanatodiphenyl ether is a valuable intermediate in the synthesis of advanced materials in the chemical industry.

Formula: C₁₄H₈N₂O₃

InChI: InChI=1S/C14H8N2O3/c17-9-15-11-1-5-13(6-2-11)19-14-7-3-12(4-8-14)16-10-18/h1-8H

InChI key: InChIKey=KDLIYVDINLSKGR-UHFFFAOYSA-N

SMILES: O(C1=CC=C(N=C=O)C=C1)C2=CC=C(N=C=O)C=C2

Synonyms:

• 1,1′-Oxybis[4-isocyanatobenzene]
• 4,4′-Diisocyanatodiphenyl ether
• Benzene, 1,1′-oxybis[4-isocyanato-
• Isocyanic acid, oxydi-p-phenylene ester
• Oxybis(4-phenyl isocyanate)

4,4′-Oxybis(phenyl isocyanate)

CAS: 4128-73-8

Formula: C₁₄H₈N₂O₃

Color and Shape: Solid

Molecular weight: 252.2249

Ref: IN-DA003KDY

4,4'-Oxybis(phenyl isocyanate)

CAS: 4128-73-8

4,4'-Oxybis(phenyl isocyanate) (PAPI) is an organic compound that can be used to synthesize polyurethanes. This compound is a diisocyanate, which reacts with a diol to form a polyurethane polymer. It does not react with water and is soluble in organic solvents. PAPI is often used as a cross-linking agent for the production of elastomers and rubbers. The permeation properties of PAPI are determined by how long it takes for the material to pass through the skin or other tissues.

Formula: C₁₄H₈N₂O₃

Purity: Min. 95%

Color and Shape: White Off-White Powder

Molecular weight: 252.22 g/mol

Ref: 3D-FO00269

4,4'-Bis(isocyanatophenyl)oxide

Controlled Product

CAS: 4128-73-8

Stability Moisture Sensitive
Applications 4,4'-Bis(isocyanatophenyl)oxide is a reagent used in the synthesis of lipid-conjugated Smac analogs with antitumor activity against human breast cancer cell lines.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Micewicz, E et al.: Bioorg. Med. Chem. Lett., 25, 4419 (2015);

Formula: C₁₄H₈N₂O₃

Color and Shape: Neat

Molecular weight: 252.22

Ref: TR-B448770