Description

4-Sulphophthalic Acid, Ammonium Salt is a functionalized organic salt derived from phthalic acid, valued for its water-solubility and anionic surfactant properties imparted by the sulphonate group. This compound serves as a key intermediate and additive in advanced material synthesis and industrial formulations. It is primarily utilized by manufacturers in the polymer, textile, and specialty chemical industries seeking to modify surface properties or introduce specific functional groups.

Application

• Polymer Industry: As a monomer or co-monomer for synthesizing water-soluble or sulfonated polymers, including polyesters and polyamides.
• Textile Auxiliaries: Employed in dyeing and finishing processes as a dispersing agent or leveling agent for improved color uniformity.
• Surfactant Intermediate: Serves as a precursor for the production of specialized anionic surfactants and detergents.
• Corrosion Inhibition: Used in formulations for cooling water systems or metal treatment fluids due to its scale inhibition and dispersing properties.
• Chelating Agent: Acts as a ligand for metal ions in various industrial cleaning and plating applications.
• Analytical Chemistry: May be used as a reagent or buffer component in specific analytical methodologies.
• Paper & Pulp Industry: Functions as a dispersant and process aid in paper coating and sizing formulations.
• Ceramic & Cement Additives: Utilized as a grinding aid or plasticizer to improve the workability and properties of inorganic materials.

Basic Information

Product Name	4-Sulphophthalic Acid, Ammonium Salt
CAS No.	59175-03-0
Molecular Formula	C8H11NO7S
Molecular Weight	265.24 g/mol
Synonyms	Ammonium 4-Sulfophthalate; 4-Sulfophthalic Acid Ammonium Salt; Ammonium 4-Sulphobenzoate-2-carboxylate; 1,2-Benzenedicarboxylic acid, 4-sulfo-, ammonium salt; 4-Sulfobenzoic Acid-2-carboxylic Acid Ammonium Salt; 4-Carboxybenzenesulfonic Acid Ammonium Salt; Phthalic-4-sulfonic Acid Ammonium Salt
EINECS	Contact for details

Quality Control

Our 4-Sulphophthalic Acid, Ammonium Salt is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA), detailing parameters such as assay, impurity profile, and physical properties, is provided with every shipment to guarantee supply reliability and product integrity for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after initial use to prevent absorption of atmospheric moisture, which may affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% solution)	4.0 - 6.0
Heavy Metals (as Pb)	≤ 10 ppm
Sulfate Ash	≤ 0.1%

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