Description

2-Nitroso-1-Naphthol-4-Sulfonic Acid Tetrahydrate is a specialized organic chemical intermediate and reagent, primarily valued for its role as a chelating agent and chromogenic compound. Its significance lies in its ability to form stable, colored complexes with specific metal ions, making it a critical component in analytical chemistry and industrial processes. This product is essential for manufacturers and R&D laboratories in the chemical synthesis, analytical reagent, and specialty dye sectors, where precise metal detection and complexation are required.

Application

• Analytical Reagent: Used as a sensitive and selective colorimetric reagent for the detection and quantitative determination of specific metal ions, such as cobalt and palladium, in various matrices.
• Chemical Synthesis Intermediate: Serves as a key building block in the synthesis of more complex organic molecules, including dyes, pigments, and other functional chemicals.
• Chelating Agent: Employed in processes requiring the sequestration or purification of metal ions due to its strong complexing properties.
• Research & Development: Utilized in laboratory settings for method development, analytical research, and studies involving metal-ligand interactions.
• Photographic Chemicals: Can be applied in the formulation of certain photographic developers or sensitizers.
• Catalyst Preparation: Used in the preparation of metal-based catalysts where the nitrosonaphthol moiety acts as a ligand.

Basic Information

Product Name	2-Nitroso-1-Naphthol-4-Sulfonic Acid Tetrahydrate
CAS No.	624725-88-8
Molecular Formula	C₁₀H₇NO₅S · 4H₂O
Molecular Weight	Approx. 329.28 g/mol (Tetrahydrate)
Synonyms	1-Nitroso-2-naphthol-4-sulfonic acid tetrahydrate; 2-Nitroso-1-naphthol-4-sulfonic acid hydrate; Nitroso-R-salt tetrahydrate; 1,2-Naphthoquinone-1-oxime-4-sulfonic acid tetrahydrate; C.I. 56005; 4-Sulfo-1,2-naphthoquinone-1-oxime tetrahydrate; Palladium reagent
EINECS	Contact for details

Quality Control

Our 2-Nitroso-1-Naphthol-4-Sulfonic Acid Tetrahydrate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a Certificate of Analysis (COA) with key parameters including assay, loss on drying, and heavy metal content, confirming compliance with agreed specifications. Our quality system is designed to meet the rigorous demands of industrial and laboratory applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 22.0% (Tetrahydrate)
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water, alkaline solutions

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