Description

1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt is a water-soluble, disodium salt derivative of a nitrosonaphthol compound, valued for its strong chelating properties and role as a key intermediate in organic synthesis. This compound is essential for the precise detection and quantification of specific metal ions, particularly cobalt, in analytical chemistry. It serves critical functions in the dye and pigment industries, as well as in research and quality control laboratories requiring high-purity analytical reagents.

Application

• Analytical Reagent: Primarily used as a sensitive and selective colorimetric reagent for the detection and spectrophotometric determination of cobalt (Co²⁺ and Co³⁺) ions.
• Chelating Agent: Acts as a powerful chelator in metal ion separation processes and in the preparation of metal complexes.
• Chemical Intermediate: Serves as a crucial building block in the synthesis of more complex organic molecules, dyes, and functional chemicals.
• Dye & Pigment Manufacturing: Used in the production of specific azo dyes and pigments where its structure contributes to color properties and stability.
• Research & Development: Employed in laboratory settings for method development in analytical chemistry and metallurgy.
• Water Treatment: Potential application in formulations for sequestering metal ions in industrial water systems.

Basic Information

Product Name	1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt
CAS No.	32588-53-7
Molecular Formula	C₁₀H₅NNa₂O₈S₂
Molecular Weight	377.24 g/mol
Synonyms	Disodium 1-Nitroso-2-naphthol-3,6-disulfonate; Nitroso R Salt; 1-Nitroso-2-naphthol-3,6-disulfonic acid sodium salt; Cobalt Reagent; 2-Nitroso-1-naphthol-3,6-disulfonic acid disodium salt; Nitroso-R-Salt; 3,6-Disulfo-1-nitroso-2-naphthol disodium salt; NSC 403697
EINECS	251-115-5

Quality Control

Our 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay (HPLC), identification (IR, UV-Vis), and impurity profiling, to ensure it meets high-purity standards suitable for analytical and synthetic applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

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

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