Description

1-Hydroxy-5-[(Methylsulfonyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity organic intermediate and dye precursor with significant commercial utility. This compound is valued for its role in synthesizing specialized dyes, pigments, and functional colorants, offering excellent lightfastness and color properties. It is primarily sought by manufacturers in the dyestuff, textile, and specialty chemical industries for advanced production processes.

Application

• Key intermediate in the synthesis of acid dyes and reactive dyes for textiles and leather.
• Precursor for manufacturing high-performance pigments and colorants used in inks and coatings.
• Used in research and development of specialty functional dyes for optical and electronic applications.
• Potential intermediate for pharmaceutical and agrochemical active ingredient synthesis.
• Employed in analytical chemistry as a reagent or standard for method development.

Basic Information

Product Name	1-Hydroxy-5-[(Methylsulfonyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	71173-82-5
Molecular Formula	C12H11NNaO7S2
Molecular Weight	376.34 g/mol
Synonyms	5-[(Methylsulfonyl)amino]-1-hydroxy-2-naphthalenesulfonic acid sodium salt; 1-Hydroxy-5-(methylsulfonylamino)-2-naphthalenesulfonic acid sodium salt; Sodium 1-hydroxy-5-[(methylsulfonyl)amino]-2-naphthalenesulfonate; 5-(Methylsulfonylamino)-1-naphthol-2-sulfonic acid sodium salt; 1-Naphthol-5-[(methylsulfonyl)amino]-2-sulfonic acid sodium salt; Acid Orange 156 intermediate; Dye intermediate 71173-82-5
EINECS	Contact for details

Quality Control

Our 1-Hydroxy-5-[(Methylsulfonyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Light yellow to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 1.0%

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