Description

2-Carboxy-5-Nitrobenzenesulfonic Acid Potassium Salt is a key sulfonated aromatic intermediate with versatile reactivity. This compound matters for its role as a building block in the synthesis of more complex molecules, particularly dyes, pigments, and specialty chemicals. Industries that need it include fine chemical manufacturing, research and development, and the production of colorants and functional materials.

Application

• Intermediate in the synthesis of azo dyes and pigments.
• Building block for specialty surfactants and dispersants.
• Precursor in pharmaceutical and agrochemical research.
• Used in the manufacture of optical brighteners and fluorescent agents.
• Chemical reagent in organic synthesis and catalysis studies.
• Potential monomer for functional polymer development.

Basic Information

Product Name	2-Carboxy-5-Nitrobenzenesulfonic Acid Potassium Salt
CAS No.	5344-48-9
Molecular Formula	C7H4KNO7S
Molecular Weight	285.28 g/mol
Synonyms	5-Nitro-2-sulfobenzoic Acid Potassium Salt; Potassium 5-Nitro-2-sulfobenzoate; 5-Nitro-2-carboxybenzenesulfonic Acid Potassium Salt; 2-Carboxy-5-nitrobenzenesulfonate Potassium; Benzoic acid, 5-nitro-2-sulfo-, potassium salt; 3-Carboxy-4-nitrobenzenesulfonic Acid Potassium Salt; 4-Nitro-3-sulfobenzoic Acid Potassium Salt
EINECS	226-287-4

Quality Control

Our 2-Carboxy-5-Nitrobenzenesulfonic Acid Potassium Salt is produced under a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical characteristics is available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place 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	Yellow to pale brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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