Description

2-Amino-6-Nitro-1-Phenol-4-Sulfonic Acid is a key sulfonated aromatic intermediate with significant utility in advanced chemical synthesis. Its molecular structure, featuring amino, nitro, and sulfonic acid groups, makes it a versatile building block for creating complex, high-value compounds. This product is essential for manufacturers in the dye, pigment, and pharmaceutical industries seeking to develop products with specific coloristic or biological properties.

Application

• Primary intermediate in the synthesis of azo dyes and pigments, particularly for yellow, orange, and red shades.
• Key starting material for manufacturing hair dye couplers and other specialty colorants for the cosmetics industry.
• Building block in pharmaceutical research for the development of sulfonamide-based active pharmaceutical ingredients (APIs).
• Used in the production of optical brightening agents and fluorescent whitening compounds.
• Intermediate for corrosion inhibitors and specialty additives in industrial formulations.
• Research chemical in academic and industrial R&D for novel material science applications.

Basic Information

Product Name	2-Amino-6-Nitro-1-Phenol-4-Sulfonic Acid
CAS No.	96-93-5
Molecular Formula	C₆H₆N₂O₆S
Molecular Weight	234.19 g/mol
Synonyms	6-Nitro-2-aminophenol-4-sulfonic Acid; 2-Amino-6-nitrophenol-4-sulfonic Acid; 4-Sulfo-2-amino-6-nitrophenol; 1-Hydroxy-2-amino-6-nitro-4-sulfonic acid; 6-Nitro-1-hydroxy-2-amino-4-sulfonic acid; 2-Amino-6-nitro-4-sulfophenol; ANPS Acid; C.I. 76535
EINECS	202-548-9

Quality Control

Our production of 2-Amino-6-Nitro-1-Phenol-4-Sulfonic Acid adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise chemical and physical specifications, with a typical purity of ≥98% (HPLC). We provide comprehensive Certificates of Analysis (COA) for each shipment, detailing assay, impurity profile, and physical characteristics. Our quality system is designed to ensure batch-to-batch consistency and reliability for your critical synthesis processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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