Description

2-(4-Aminoanilino)-5-nitrobenzenesulphonic acid (CAS No. 91-29-2) is a high-purity sulfonic acid derivative with the molecular formula C₁₂H₁₁N₃O₅S. This compound features a nitro-substituted benzene ring linked to a sulfonic acid group and an aminoaniline moiety, making it a versatile intermediate in organic synthesis and dye chemistry. Its IUPAC name is 2-(4-aminoanilino)-5-nitrobenzenesulfonic acid, and it is supplied as a fine powder or crystalline solid with consistent batch-to-batch quality. Ideal for researchers in pharmaceuticals, materials science, and specialty chemicals, this product is rigorously tested for purity (typically ≥95% by HPLC) and stability under recommended storage conditions (room temperature, dry environment).

Applications include its use as a precursor in azo dye synthesis, corrosion inhibitors, and functionalized polymer development. Each shipment includes comprehensive analytical data (MSDS, NMR, FTIR) to ensure compliance with laboratory and industrial standards.

Properties

• CAS Number: 91-29-2
• Complexity: 464
• IUPAC Name: 2-(4-aminoanilino)-5-nitro-benzenesulfonic acid
• InChI: InChI=1S/C12H11N3O5S/c13-8-1-3-9(4-2-8)14-11-6-5-10(15(16)17)7-12(11)21(18,19)20/h1-7,14H,13H2,(H,18,19,20)
• InChI Key: GSITZZUEHIPPMH-UHFFFAOYSA-N
• Exact Mass: 309.04194163
• Molecular Formula: C12H11N3O5S
• Molecular Weight: 309.30
• SMILES: C1=CC(=CC=C1N)NC2=C(C=C(C=C2)[N+](=O)[O-])S(=O)(=O)O
• Topological: 147
• Monoisotopic Mass: 309.04194163
• Synonyms: 2-(4-Aminoanilino)-5-nitrobenzenesulphonic acid, Benzenesulfonic acid, 2-[(4-aminophenyl)amino]-5-nitro-, 2-((4-Aminophenyl)amino)-5-nitrobenzenesulfonic acid, Benzenesulfonic acid, 2-((4-aminophenyl)amino)-5-nitro-, DTXSID1059020, 2-[(4-AMINOPHENYL)AMINO]-5-NITROBENZENESULFONIC ACID, DTXCID5048712, 202-057-9, 91-29-2, Aniline Nitro Nerol Acid, 2-(4-aminoanilino)-5-nitrobenzenesulfonic acid, 2-(p-Aminoanilino)-5-nitrobenzenesulfonic acid, F9C9UR6E7L, NSC-5534, 4-Aminodiphenyamine-2-sulfonic acid, Benzenesulfonic acid, 2-(p-aminoanilino)-5-nitro-, 2-[N-(4-Aminophenyl)]amino-5-nitrobenzenesulphonic Acid, NSC 5534, EINECS 202-057-9, UNII-F9C9UR6E7L, Cambridge id 5209247, CBDivE_016101, 2-((4-Aminophenyl)amino)-5-nitrobenzenesulfonicacid, SCHEMBL2032113, NSC5534, GSITZZUEHIPPMH-UHFFFAOYSA-N, AKOS015960705, AC-12054, NS00039393, 2-(p-Aminoanilino)-5-nitrobenzenesulphonic acid, SR-01000198500, 2-(4-aminophenylamino)-5-nitrobenzenesulfonic acid, Benzenesulphonic acid, 2-(p-aminoanilino)-5-nitro-, SR-01000198500-1, 2-[(4-Aminophenyl)amino]-5-nitrobenzenesulphonic acid, Benzenesulphonic acid, 2-((4-aminophenyl)amino)-5-nitro-

Application

This compound serves as a key intermediate in the synthesis of azo dyes, providing vibrant colorants for textiles and inks. It is also utilized in corrosion inhibition formulations due to its sulfonic acid group’s chelating properties. Researchers employ it in polymer modification to introduce nitro- and amino-functionalized aromatic groups for enhanced material properties.

Safety and Hazards

GHS Hazard Statements

• Not Classified
• Reported as not meeting GHS hazard criteria by 12 of 13 companies (only 7.7% companies provided GHS information). For more detailed information, please visit ECHA C&L website.

Hazard Classes and Categories

• Not Classified

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