Description

1,5-Naphthalenedisulfonic Acid Dimethyl Ester is a specialized organic intermediate of significant importance in advanced chemical synthesis. This compound matters for its role as a key building block in the production of high-performance dyes, optical brighteners, and functional polymers. Industrial buyers in the dyestuff, textile chemical, and specialty polymer sectors require this high-purity intermediate to ensure the quality and consistency of their final products.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of naphthalene-based acid dyes, reactive dyes, and high-value pigments.
• Optical Brightener Production: Used in the manufacturing of stilbene-type optical brightening agents (OBAs) for paper, textiles, and detergents.
• Polymer Modification: Serves as a sulfonation agent or comonomer to introduce sulfonic acid groups into polymers, enhancing hydrophilicity and dyeability.
• Chemical Research & Development: Employed as a standard or building block in organic synthesis and pharmaceutical research for creating sulfonated compounds.
• Liquid Crystal & Electronic Materials: Potential intermediate in the synthesis of sulfonated compounds for advanced materials science applications.
• Surfactant & Dispersant Synthesis: Acts as a starting material for producing specialized anionic surfactants and dispersing agents.

Basic Information

Product Name	1,5-Naphthalenedisulfonic Acid Dimethyl Ester
CAS No.	20779-13-9
Molecular Formula	C₁₂H₁₂O₆S₂
Molecular Weight	316.35 g/mol
Synonyms	Dimethyl 1,5-Naphthalenedisulfonate; 1,5-Naphthalenedisulfonic Acid Dimethyl Ester; 1,5-Naphthalene Disulfonic Acid Dimethyl Ester; NSC 403107; 1,5-NDSA Dimethyl Ester; 1,5-Bis(methylsulfonyl)naphthalene; Dimethyl Naphthalene-1,5-disulfonate
EINECS	244-045-8

Quality Control

Our 1,5-Naphthalenedisulfonic Acid Dimethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets exacting specifications for industrial use. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality assurance protocols.

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 heat sources and incompatible materials. The product is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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