Description

Sodium 1-Hydroxynaphthalene-2-Sulphonate is a versatile organic chemical intermediate and dye precursor. This compound is valued for its ability to introduce sulfonate and hydroxyl functional groups into complex molecules, enhancing solubility and reactivity. It is a critical raw material for manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries seeking to develop or produce naphthalene-based derivatives.

Application

• Dye and Pigment Manufacturing: A key intermediate in the synthesis of azo dyes, acid dyes, and other colorants, particularly for textiles and leather.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Synthesis: Serves as a building block for producing other naphthalene sulfonate derivatives, surfactants, and dispersants.
• Analytical Reagent: Employed in laboratory settings as a reagent for chemical analysis and research.
• Photographic Chemicals: Can be used in the formulation of certain photographic developers and chemicals.
• Corrosion Inhibitors: A component in formulations designed to prevent corrosion in industrial water systems.

Basic Information

Product Name	Sodium 1-Hydroxynaphthalene-2-Sulphonate
CAS No.	832-50-8
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	1-Hydroxy-2-naphthalenesulfonic acid sodium salt; 2-Naphthol-1-sulfonic acid sodium salt; Sodium 1-hydroxy-2-naphthalenesulfonate; 1,2-Naphtholsulfonic acid sodium salt; Schaeffer's salt sodium salt; Schaeffer's acid sodium salt; Sodium 2-hydroxy-1-naphthalenesulfonate (isomeric); Sodium 2-naphthol-1-sulfonate
EINECS	212-615-8

Quality Control

Our Sodium 1-Hydroxynaphthalene-2-Sulphonate is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Content (Karl Fischer)	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 0.5%

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