Description

4-Hydroxy-3-Nitroso-1-Naphthalenesulfonic Acid Sodium Salt is a specialized organic salt and a key intermediate in the synthesis of dyes, pigments, and analytical reagents. Its value lies in the unique nitroso and sulfonic acid functional groups, which impart specific chromophoric and complexing properties essential for high-performance applications. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research laboratories developing colorimetric detection methods and metal chelating agents.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes and other complex colorants, particularly for textiles and inks.
• Analytical Reagent: Used in colorimetric assays and as a complexing agent for the detection and quantification of specific metal ions in analytical chemistry.
• Chemical Synthesis: Serves as a building block for more complex naphthalene derivatives in pharmaceutical and specialty chemical research.
• Photographic Chemicals: Can be utilized in the formulation of certain light-sensitive compounds and developers.
• Corrosion Inhibitor Formulation: Potential use as a component in formulations designed to protect metals, leveraging its complexing properties.
• Research & Development: Employed in academic and industrial R&D for studying nitroso chemistry and sulfonated compound behavior.

Basic Information

Product Name	4-Hydroxy-3-Nitroso-1-Naphthalenesulfonic Acid Sodium Salt
CAS No.	1787-54-8
Molecular Formula	C₁₀H₆NNaO₆S
Molecular Weight	291.21 g/mol
Synonyms	1-Naphthalenesulfonic acid, 4-hydroxy-3-nitroso-, sodium salt; Sodium 4-hydroxy-3-nitroso-1-naphthalenesulfonate; 3-Nitroso-4-hydroxy-1-naphthalenesulfonic acid sodium salt; Nitroso R salt; NSC 403697; 4-Hydroxy-3-nitrosonaphthalene-1-sulfonate sodium salt
EINECS	217-244-2

Quality Control

Our 4-Hydroxy-3-Nitroso-1-Naphthalenesulfonic Acid Sodium Salt is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is provided with each shipment to guarantee it meets your technical requirements.

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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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