Description

4-Amino-Benzenesulfonic Acid Monosodium Salt is a key organic intermediate and sodium salt derivative of sulfanilic acid, valued for its excellent water solubility and stability. This compound serves as a versatile building block in the synthesis of dyes, pigments, and various fine chemicals. It is essential for manufacturers in the dye, pharmaceutical, and agrochemical industries seeking reliable and high-purity raw materials.

Application

• Dye and Pigment Intermediate: A crucial precursor in the manufacture of azo dyes, acid dyes, and direct dyes, providing the essential diazo component.
• Pharmaceutical Synthesis: Used as an intermediate in the production of certain sulfa drugs and other active pharmaceutical ingredients (APIs).
• Agrochemical Production: Employed in the synthesis of herbicides, pesticides, and other crop protection agents.
• Chemical Research & Development: Serves as a standard or reagent in organic synthesis and analytical chemistry laboratories.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic developers and sensitizers.
• Corrosion Inhibitor Formulation: Acts as a component in some industrial water treatment and metalworking fluid formulations.

Basic Information

Product Name	4-Amino-Benzenesulfonic Acid Monosodium Salt
CAS No.	515-74-2
Molecular Formula	C6H6NNaO3S
Molecular Weight	195.17 g/mol
Synonyms	Sulfanilic Acid Sodium Salt; Sodium Sulfanilate; Aniline-4-sulfonic Acid Sodium Salt; 4-Sulfoaniline Sodium Salt; Sodium 4-Aminobenzenesulfonate; Benzenesulfonic Acid, 4-Amino-, Monosodium Salt; Sodium Anilinesulfonate
EINECS	208-208-5

Quality Control

Our 4-Amino-Benzenesulfonic Acid Monosodium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for industrial and fine chemical synthesis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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 opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 0.2%
Solubility (in Water)	Clear, colorless solution

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