Description

2-Aminobenzenesulfonic Acid (1-Methylethylidene)Di-4,1-Phenylene Ester is a specialized aromatic sulfonate ester compound with a unique bridged molecular structure. This chemical is valued for its role as a versatile intermediate and functional additive in advanced material synthesis. It is primarily sought by manufacturers in the polymer, specialty chemical, and pharmaceutical industries for applications requiring tailored sulfonation and ester functionalities.

Application

• As a key monomer or chain extender in the synthesis of high-performance engineering plastics and polyarylether sulfones.
• As a functional intermediate in pharmaceutical research for creating novel active pharmaceutical ingredients (APIs) with sulfonamide or ester linkages.
• In the production of specialty dyes and pigments, where its structure can contribute to color fastness and solubility properties.
• As a cross-linking agent or modifier in epoxy resin systems and other thermoset polymers to enhance thermal and chemical resistance.
• For research and development of advanced polymer electrolytes and ion-exchange membranes used in fuel cells and battery technologies.
• As a building block in organic synthesis for creating complex molecules with specific optical or electronic properties.

Basic Information

Product Name	2-Aminobenzenesulfonic Acid (1-Methylethylidene)Di-4,1-Phenylene Ester
CAS No.	68015-60-1
Molecular Formula	C21H19NO5S
Molecular Weight	397.44 g/mol
Synonyms	Bis(4-hydroxyphenyl) 2-aminobenzenesulfonate isopropylidene diether; 2-Aminobenzenesulfonic Acid Isopropylidenediphenol Ester; Phenol, 4,4'-(1-methylethylidene)bis-, 2-aminobenzenesulfonate (ester); Bisphenol A 2-aminobenzenesulfonate ester; Sulfanilic Acid Bisphenol A Ester; 4,4'-Isopropylidenediphenol 2-aminobenzenesulfonate
EINECS	Contact for details

Quality Control

Our 2-Aminobenzenesulfonic Acid (1-Methylethylidene)Di-4,1-Phenylene Ester is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent batch-to-batch reliability. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its light-sensitive nature and propensity for oxidation, it is recommended to handle under an inert atmosphere for long-term storage and to minimize headspace in opened containers.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.