Description

4,4′-Thiodianiline (CAS No. 139-65-1) is a high-purity aromatic amine compound with the molecular formula C₁₂H₁₂N₂S. This yellow to light brown crystalline solid is widely utilized in polymer synthesis, particularly as a precursor for high-performance polyimides, epoxy resins, and other thermally stable materials. Its IUPAC name, 4-(4-aminophenyl)sulfanylaniline, reflects its symmetrical structure featuring two aniline groups linked by a sulfur bridge. With a purity grade suitable for research and industrial applications, our 4,4′-Thiodianiline is rigorously tested to ensure consistency in reactivity and performance. Ideal for crosslinking agents, adhesives, and advanced material development, this compound is packaged under controlled conditions to maintain stability and shelf life.

Properties

• CAS Number: 139-65-1
• Complexity: 162
• IUPAC Name: 4-(4-aminophenyl)sulfanylaniline
• InChI: InChI=1S/C12H12N2S/c13-9-1-5-11(6-2-9)15-12-7-3-10(14)4-8-12/h1-8H,13-14H2
• InChI Key: ICNFHJVPAJKPHW-UHFFFAOYSA-N
• LogP: log Kow = 2.18
• Exact Mass: 216.07211956
• Molecular Formula: C12H12N2S
• Molecular Weight: 216.30
• SMILES: C1=CC(=CC=C1N)SC2=CC=C(C=C2)N
• Topological: 77.3
• Monoisotopic Mass: 216.07211956
• Physical Description: 4,4′-thiodianiline appears as needles or brown powder.
• Color/Form: Needles
• Melting Point: 226 to 228 °F
• Solubility: less than 0.1 mg/mL at 68 °F
• Vapor Pressure: 0.0000111 [mmHg]
• Synonyms: 4,4′-Thiodianiline, 139-65-1, 4,4′-Diaminodiphenyl sulfide, 4,4-thiodianiline, Bis(4-aminophenyl) sulfide, Benzenamine, 4,4′-thiobis-, 4,4′-Thioaniline, p,p-Thiodianiline, Bis(4-aminophenyl)sulfide, Di(p-aminophenyl) sulfide, 4,4′-THIOBISBENZENAMINE, p,p’-Diaminodiphenyl sulfide, Thioaniline, Thiodi-p-phenylenediamine, Bis(p-aminophenyl)sulfide, Aniline, 4,4′-thiodi-, Bis(p-aminophenyl) sulfide, 4,4′-Diaminophenyl sulfide, Sulfide, bis(p-aminophenyl), NCI-C01707, Di(p-aminophenyl)sulphide, 4,4′-Thiobis(aniline), Bis(p-aminophenyl)sulphide, Bis(4-aminophenyl)sulphide, 4,4′-Diaminodiphenylsulfide, 4,4′-Diaminodiphenylsulphide, 4,4-Diaminodiphenyl sulphide, p,p’-Diaminodiphenyl sulphide, para,para’-Thiodianiline, Thiodi-para-phenylenediamine, NSC 6191, Bis(para-aminophenyl)sulphide, CCRIS 585, Di(para-aminophenyl) sulphide, HSDB 5074, para,para’-Diaminodiphenyl sulphide, Sulfide, diphenyl, 4,4′-diamino-, EINECS 205-370-9, 6GGU990BQF, p,p’-Thiodianiline, BRN 1875513, DTXSID9021344, AI3-52492, NSC-6191, 4,4′-Thiobis[aniline], DTXCID501344, 3-[(4-aminophenyl)thio]aniline, NSC6191, 4,4′-THIODIANILINE [HSDB], 4,4′-THIODIANILINE [IARC], 3-((4-Aminophenyl)Thio)Aniline, 4,4′-THIODIANILINE (IARC), p,pThiodianiline, 4,4’Thioaniline, THIOANLINE, Thiodipphenylenediamine, para,para’Thiodianiline, Aniline, 4,4’thiodi, 4,4’Thiobisbenzenamine, 4,4’Thiobis(aniline), Bis(paminophenyl)sulfide, Di(paminophenyl)sulphide, Bis(4aminophenyl)sulfide, Di(paminophenyl) sulfide, Thiodiparaphenylenediamine, Bis(paminophenyl)sulphide, Bis(4aminophenyl)sulphide, Bis(paminophenyl) sulfide, Bis(4aminophenyl) sulfide, 4,4′-Thiobis-benzenamine, 4,4’Diaminophenyl sulfide, Benzenamine, 4,4’thiobis, Sulfide, bis(paminophenyl), Bis(paraaminophenyl)sulphide, p,p’Diaminodiphenyl sulfide, 4,4’Diaminodiphenylsulphide, 4,4Diaminodiphenyl sulphide, 4,4’diaminodiphenyl sulfide, Di(paraaminophenyl) sulphide, p,p’Diaminodiphenyl sulphide, DI(P-AMINOPHENYL)SULFIDE, Sulfide, diphenyl, 4,4’diamino, para,para’Diaminodiphenyl sulphide, P,P’-DIAMINODIPHENYLSULFIDE, 205-370-9, 4-(4-aminophenyl)sulfanylaniline, MFCD00025342, 4-Aminophenylthioether, 4-[(4-aminophenyl)sulfanyl]aniline, CHEBI:82374, NCGC00091380-04, 4-Aminophenylthioether 10 microg/mL in Acetonitrile, 4-(4-aminophenylthio)phenylamine, 4-Aminophenyl Sulfide, 4,4/’-Thiodianiline, UNII-6GGU990BQF, 4-[(4-aminophenyl)thio]aniline, 4-aminophenylsulfide, Aniline,4′-thiodi-, 4,4′-thio-dianiline, Benzenamine,4′-thiobis-, WLN: ZR DSR DZ, ChemDiv3_000187, 4,4′-sulfanediyldianiline, SCHEMBL49068, MLS002303004, 4,4′-THIODIANILINE, CHEMBL348856, ICNFHJVPAJKPHW-UHFFFAOYSA-, MSK1217, HMS1473I11, HMS3091M14, ALBB-006286, Tox21_400005, SBB048127, STK502135, 4,4′-Diaminodiphenyl sulfide, 98%, AKOS000120259, CS-W014838, IDI1_019505, NCGC00091380-01, NCGC00091380-02, NCGC00091380-03, NCGC00091380-05, AC-16457, AS-14556, CAS-139-65-1, SMR001252212, SY055354, 4-[(4-Aminophenyl)sulfanyl]phenylamine #, DB-042482, 4,4 inverted exclamation mark -Thiodianiline, EU-0033395, NS00010896, ST50307641, EN300-16804, C19303, H11872, 4,4′-Diaminodiphenyl sulfide, analytical standard, SR-01000389036, SR-01000389036-1, BRD-K54288638-001-01-9, Q10859491, InChI=1/C12H12N2S/c13-9-1-5-11(6-2-9)15-12-7-3-10(14)4-8-12/h1-8H,13-14H2

Application

4,4′-Thiodianiline serves as a key monomer in the synthesis of polyimides and epoxy resins, enhancing thermal and mechanical properties in high-temperature applications. It is also employed as a curing agent for elastomers and adhesives, providing excellent chemical resistance. Researchers utilize this compound in the development of conductive polymers and optoelectronic materials due to its electron-rich aromatic structure.

Safety and Hazards

GHS Hazard Statements

• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H351: Suspected of causing cancer [Warning Carcinogenicity]
• H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]

Precautionary Statements

• P203, P264, P270, P280, P301+P317, P318, P330, P405, and P501

Hazard Classes and Categories

• Acute toxicity – Category 4
• Germ cell mutagenicity – Category 2
• Carcinogenicity – Category 2
• Reproductive toxicity – Category 2

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