Description

Sodium 2-Naphthol-7-Sulfonate is a high-purity, water-soluble sodium salt of a naphthol sulfonic acid derivative. This compound serves as a crucial intermediate and coupling agent in the synthesis of dyes, pigments, and specialty chemicals. It is essential for manufacturers in the dyestuff, textile, and fine chemical industries requiring consistent quality for complex organic synthesis.

Application

• Dye and Pigment Intermediate: A key building block in the production of azo dyes, acid dyes, and reactive dyes for textiles and leather.
• Coupling Agent: Used in diazo coupling reactions to create complex organic molecules with specific color properties.
• Chemical Synthesis: Serves as a versatile sulfonated intermediate in the manufacture of specialty chemicals and pharmaceuticals.
• Research & Development: Utilized in laboratory settings for developing new chromophores and functional materials.
• Photographic Chemicals: May be employed in the formulation of certain photographic developers and chemicals.

Basic Information

Product Name	Sodium 2-Naphthol-7-Sulfonate
CAS No.	135-55-7
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	2-Naphthol-7-sulfonic acid sodium salt; 7-Hydroxy-2-naphthalenesulfonic acid sodium salt; Sodium 7-hydroxy-2-naphthalenesulfonate; 2-Hydroxy-7-naphthalenesulfonic acid sodium salt; Schaeffer's salt sodium salt; Schaeffer's salt; 7-Hydroxy-2-naphthalenesulfonate sodium
EINECS	205-201-7

Quality Control

Our Sodium 2-Naphthol-7-Sulfonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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 strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Conforms
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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