Description

Naphthalene-1,5-Disulfonyl Chloride is a versatile and highly reactive organic intermediate, primarily valued for its role as a key building block in the synthesis of more complex molecules. Its bifunctional nature, featuring two reactive sulfonyl chloride groups, makes it an essential precursor for creating dyes, fluorescent brighteners, and advanced pharmaceutical compounds. This chemical is particularly critical for manufacturers and R&D teams in the specialty chemical, agrochemical, and life sciences sectors seeking to develop novel sulfonamide derivatives and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for creating sulfonamide-based drugs and diagnostic agents.
• Dye and Pigment Manufacturing: Serves as a core building block for producing high-value naphthalene-based dyes, optical brighteners, and fluorescent pigments.
• Agrochemical Synthesis: Used in the development of modern herbicides, fungicides, and plant growth regulators that incorporate sulfonyl functional groups.
• Polymer and Material Science: Employed as a cross-linking agent or monomer in the production of specialty polymers, resins, and advanced functional materials.
• Chemical Research & Development: A valuable reagent in organic synthesis laboratories for constructing complex molecular architectures and exploring new chemical entities.
• Liquid Crystal and OLED Materials: Acts as an intermediate in the synthesis of components for electronic displays and optoelectronic devices.

Basic Information

Product Name	Naphthalene-1,5-Disulfonyl Chloride
CAS No.	1928-01-4
Molecular Formula	C10H6Cl2O4S2
Molecular Weight	325.18 g/mol
Synonyms	1,5-Naphthalenedisulfonyl Dichloride; Naphthalene-1,5-disulfonic Acid Dichloride; 1,5-Naphthalene Disulfonyl Chloride; 1,5-NDSC; NSC 403014; 1,5-Naphthalenedisulfonyl chloride; 1,5-Naphthalene Disulphonyl Chloride
EINECS	217-690-6

Quality Control

Our Naphthalene-1,5-Disulfonyl Chloride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC, NMR, and titration methods, to confirm identity, potency, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under anhydrous conditions. Incompatible with strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	195 - 205 °C
Water Content (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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