Description

6-Chlorometanilic Acid (CAS No. 88-43-7) is a high-purity sulfonic acid derivative with the molecular formula C₆H₆ClNO₃S and IUPAC name 5-amino-2-chlorobenzenesulfonic acid. This fine chemical is widely utilized in organic synthesis, dye manufacturing, and pharmaceutical research due to its reactive sulfonic and amino functional groups. Our product is rigorously tested to ensure ≥98% purity (HPLC) and is supplied as a light tan to off-white crystalline powder with excellent solubility in water and polar organic solvents. Each batch is accompanied by comprehensive analytical documentation including ¹H NMR, HPLC chromatograms, and FTIR spectra. Available in research quantities (100g, 500g) and bulk packaging (1kg, 5kg) with customizable options. Store in airtight containers at room temperature, protected from light and moisture.

Properties

• CAS Number: 88-43-7
• Complexity: 248
• IUPAC Name: 5-amino-2-chloro-benzenesulfonic acid
• InChI: InChI=1S/C6H6ClNO3S/c7-5-2-1-4(8)3-6(5)12(9,10)11/h1-3H,8H2,(H,9,10,11)
• InChI Key: VPXCXBHLKDPWQV-UHFFFAOYSA-N
• Exact Mass: 206.9756919
• Molecular Formula: C6H6ClNO3S
• Molecular Weight: 207.64
• SMILES: C1=CC(=C(C=C1N)S(=O)(=O)O)Cl
• Topological: 88.8
• Monoisotopic Mass: 206.9756919
• Physical Description: White to light-gray solid;
• Color/Form: WHITE TO LIGHT-GREY POWDER
• Vapor Pressure: 0.00000004 [mmHg]
• Synonyms: 88-43-7, 5-Amino-2-chlorobenzenesulfonic Acid, 4-Chloroaniline-3-sulfonic acid, 6-CHLOROMETANILIC ACID, Benzenesulfonic acid, 5-amino-2-chloro-, 4-Chloro-3-sulfoaniline, UNII-P6W5Q8ZPN5, HSDB 2566, 3-amino-6-chlorobenzenesulfonic acid, EINECS 201-830-8, NSC 15346, NSC-15346, 1-Amino-4-chlorobenzene-3-sulfonic acid, AI3-28528, DTXSID2058968, 4-CHLOROANILINE-3-SULFONIC ACID [HSDB], Metanilic acid, 6chloro, pChloroanilinemsulfonic acid, 4Chloroaniline3sulfonic acid, DTXCID2048616, Metanilic acid, 6chloro (8CI), 5Amino2chlorobenzenesulphonic acid, Benzenesulfonic acid, 5amino2chloro, 201-830-8, p-Chloroaniline-m-sulfonic acid, 5-amino-2-chlorobenzene-1-sulfonic acid, Metanilic acid, 6-chloro-, 5-Amino-2-chlorobenzenesulphonic acid, P6W5Q8ZPN5, MFCD00025296, SCHEMBL176866, SCHEMBL1805062, 5-Amino-2-chlorobenzenesulfonicAcid, AAA08843, NSC15346, AKOS015854640, 1-amino-4-chlorobenzene-3-sulphonic acid, AS-62714, CS-0188462, NS00039268, E78254, EN300-123556, Q27286296

Application

6-Chlorometanilic acid serves as a key intermediate in the synthesis of azo dyes and pigments, particularly for textile applications. The compound finds use in pharmaceutical research as a building block for sulfonamide-based drug candidates. Its reactive sites make it valuable for creating specialized polymers and ion-exchange resins. Researchers also employ this chemical as a derivatization agent in analytical chemistry applications.

Safety and Hazards

GHS Hazard Statements

• H317 (92.9%): May cause an allergic skin reaction [Warning Sensitization, Skin]

Precautionary Statements

• P261, P272, P280, P302+P352, P321, P333+P317, P362+P364, and P501

Hazard Classes and Categories

• Skin Sens. 1 (92.9%)

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