Description

Benzenamine, 3,3′-[sulfonylbis(4,1-phenyleneoxy)]bis- (CAS No. 30203-11-3) is a high-purity specialty chemical with the molecular formula C₂₄H₂₀N₂O₄S. This compound, also known as Bis[4-(3-aminophenoxy)phenyl] Sulfone, is a sulfone-based aromatic amine widely used in advanced polymer synthesis and material science applications. Its unique molecular structure, featuring two reactive amine groups linked via a sulfone-bridged diphenylether backbone, makes it an exceptional building block for high-performance polyimides, epoxy resins, and other thermally stable polymers.

Our product is synthesized under stringent quality control measures to ensure >98% purity (HPLC), with minimal residual solvents and by-products. It is supplied as a fine crystalline powder with excellent solubility in polar aprotic solvents such as NMP, DMF, and DMSO. This compound is particularly valued for its ability to enhance the thermal stability, mechanical strength, and chemical resistance of engineered plastics used in aerospace, electronics, and high-temperature adhesive applications.

Each batch undergoes comprehensive analytical characterization including ¹H/¹³C NMR, FTIR, and GC-MS to verify structural integrity. The product is packaged in amber glass bottles with argon headspace to prevent oxidation and moisture absorption, ensuring long-term stability. Technical data sheets with detailed spectral data and thermal analysis (DSC/TGA) are available upon request.

Properties

• CAS Number: 30203-11-3
• Complexity: 601
• IUPAC Name: 3-[4-[4-(3-aminophenoxy)phenyl]sulfonylphenoxy]aniline
• InChI: InChI=1S/C24H20N2O4S/c25-17-3-1-5-21(15-17)29-19-7-11-23(12-8-19)31(27,28)24-13-9-20(10-14-24)30-22-6-2-4-18(26)16-22/h1-16H,25-26H2
• InChI Key: WCXGOVYROJJXHA-UHFFFAOYSA-N
• Exact Mass: 432.11437830
• Molecular Formula: C24H20N2O4S
• Molecular Weight: 432.5
• SMILES: C1=CC(=CC(=C1)OC2=CC=C(C=C2)S(=O)(=O)C3=CC=C(C=C3)OC4=CC=CC(=C4)N)N
• Topological: 113
• Monoisotopic Mass: 432.11437830
• Synonyms: Benzenamine, 3,3′-[sulfonylbis(4,1-phenyleneoxy)]bis-, EINECS 250-091-8, DTXSID1067542, 3,3′-(Sulfonylbis(4,1-phenyleneoxy))bisbenzenamine, Benzenamine, 3,3′-(sulfonylbis(4,1-phenyleneoxy))bis-, 3,3′-[SULFONYLBIS(4,1-PHENYLENEOXY)]BIS[BENZENAMINE], 3,3′-(Sulphonylbis(4,1-phenyleneoxy))dianiline, 3,3′-[sulphonylbis(4,1-phenyleneoxy)]dianiline, 3,3′-(Sulfonylbis(4,1-phenyleneoxy))bis(benzenamine), DTXCID7038151, 250-091-8, 30203-11-3, 3,3′-((Sulfonylbis(4,1-phenylene))bis(oxy))dianiline, Bis[4-(3-aminophenoxy)phenyl] Sulfone, 4,4′-BIS(3-AMINOPHENOXY)DIPHENYL SULFONE, 3-[4-[4-(3-aminophenoxy)phenyl]sulfonylphenoxy]aniline, MFCD00054738, 4-(3-aminophenoxy)-1-{[4-(3-aminophenoxy)phenyl]sulfonyl}benzene, Bis[4-(3-aminophenoxy)phenyl]sulfone, Oprea1_727578, CBDivE_005927, SCHEMBL106661, SCHEMBL1997091, 3,3′-((Sulfonylbis(4,1-phenylene))-bis(oxy))dianiline, 3-{4-[4-(3-AMINOPHENOXY)BENZENESULFONYL]PHENOXY}ANILINE, SBB057177, AKOS001389246, CS-W021785, DS-5110, SY036133, DB-410355, B1681, NS00028877, ST50307873, ST50997530, Z104478456, 3-(4-([4-(3-Aminophenoxy)phenyl]sulfonyl)phenoxy)aniline #, 1-(3-aminophenoxy)-4-{[4-(3-aminophenoxy)phenyl]sulfonyl}benzene

This compound serves as a critical monomer for synthesizing high-temperature polyimides and polyether sulfones, particularly in aerospace composites requiring thermal stability above 300°C. It is extensively used in electronic encapsulants for semiconductor devices due to its excellent dielectric properties and low thermal expansion coefficient. The material also finds application as a crosslinking agent in epoxy formulations for advanced adhesive systems in automotive and aerospace industries.

Safety and Hazards

GHS Hazard Statements

• H302 (80%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (80%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.