Description

Ammonium Dihydrogen 4-Sulphonatophthalate is a specialized organic salt of significant industrial importance. This compound serves as a key intermediate and functional additive in advanced chemical synthesis and material science applications. It is particularly valuable for manufacturers in the pharmaceutical, dye, and polymer industries seeking precise chemical functionality and reliable performance.

Application

• As a crucial intermediate in pharmaceutical synthesis, particularly for active pharmaceutical ingredients (APIs).
• In the production of specialized dyes and pigments as a functional sulfonated precursor.
• As a monomer or additive in polymer chemistry to impart specific ionic or solubility characteristics.
• For use in analytical chemistry and research as a reagent or standard.
• In the formulation of advanced materials and coatings where sulfonate functionality is required.
• As a catalyst or co-catalyst in specific organic transformations.

Basic Information

Item	Details
Product Name	Ammonium Dihydrogen 4-Sulphonatophthalate
CAS No.	65229-11-0
Molecular Formula	C8H9NO7S
Molecular Weight	263.22 g/mol
Synonyms	Ammonium 4-Sulfophthalate; 4-Sulfophthalic Acid Ammonium Salt; Ammonium 4-Sulfobenzoate-2-carboxylate; 1,2-Benzenedicarboxylic Acid, 4-Sulfo-, Monoammonium Salt; ADSP; Ammonium Dihydrogen 4-Sulfophthalate; 4-Sulfophthalic Acid Monoammonium Salt
EINECS	Contact for details

Quality Control

Our Ammonium Dihydrogen 4-Sulphonatophthalate is produced under a rigorous quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) upon request, confirming compliance with agreed specifications and supporting traceability for regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature. Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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