Description

3-Hydroxy-2-Nitrosulphanilic Acid is a specialized aromatic sulfonic acid derivative featuring both nitro and hydroxyl functional groups, making it a valuable intermediate in fine chemical synthesis. Its unique structure provides reactivity that is essential for constructing complex molecules, particularly in the production of dyes, pigments, and advanced pharmaceutical compounds. This chemical is primarily sought by manufacturers in the agrochemical, specialty dye, and research chemical sectors for developing high-performance products.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes and other complex colorants for textiles, inks, and coatings.
• Agrochemical Synthesis: Used in the manufacturing of certain herbicides and plant growth regulators, leveraging its nitro-aromatic reactivity.
• Pharmaceutical Research: Serves as a building block in the research and development of novel active pharmaceutical ingredients (APIs).
• Chemical Research & Development: Employed as a model compound or reagent in organic synthesis and methodological studies.
• Complexing Agent Precursor: Can be utilized to develop ligands and chelating agents for metal ion sequestration.

Basic Information

Product Name	3-Hydroxy-2-Nitrosulphanilic Acid
CAS No.	71411-74-0
Molecular Formula	C₆H₆N₂O₆S
Molecular Weight	234.19 g/mol
Synonyms	2-Nitro-3-hydroxybenzenesulfonic acid; 3-Hydroxy-2-nitrobenzenesulfonic acid; 2-Nitro-3-phenolsulfonic acid; Benzenesulfonic acid, 3-hydroxy-2-nitro-; 3-Hydroxy-2-nitrobenzene-1-sulfonic acid; 3-Hydroxy-2-nitrophenylsulfonic acid
EINECS	Contact for details

Quality Control

Our 3-Hydroxy-2-Nitrosulphanilic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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