Description

2-Diazo-1-Naphthol-5-Sulfonyl Chloride is a specialized diazonium compound and a key sulfonylating reagent in advanced organic synthesis. Its primary value lies in its ability to act as a versatile intermediate for introducing the sulfonyl functional group, particularly in the synthesis of dyes, pigments, and photoactive materials. This product is essential for research and industrial chemists working in the development of high-performance dyes, photographic chemicals, and functional polymers.

Application

• Dye and Pigment Intermediate: A critical precursor in the synthesis of azo dyes and naphthol-based pigments, providing colorfastness and specific hue properties.
• Photographic Chemicals: Used in the production of light-sensitive compounds and photoinitiators for imaging and photoresist applications.
• Polymer Modification: Serves as a sulfonating agent to introduce sulfonyl groups into polymer chains, altering solubility and thermal properties.
• Pharmaceutical Intermediate: Employed in the synthesis of sulfonamide-containing drug candidates and other bioactive molecules.
• Analytical Reagent: Utilized in derivatization reactions for the analysis and detection of specific functional groups via chromatography.
• Crosslinking Agent: Can act as a crosslinker in the preparation of specialty resins and coatings.

Basic Information

Product Name	2-Diazo-1-Naphthol-5-Sulfonyl Chloride
CAS No.	3770-97-6
Molecular Formula	C10H5ClN2O3S
Molecular Weight	268.67 g/mol
Synonyms	5-Sulfonyl-1,2-naphthoquinone-2-diazide chloride; 1,2-Naphthoquinone-2-diazide-5-sulfonyl chloride; DNQ-Sulfonyl Chloride; 2-Diazo-1-naphthol-5-sulfonic acid chloride; 2,1,5-Diazonaphthoquinone sulfonyl chloride; 2-Diazo-1(2H)-naphthalenone-5-sulfonyl chloride; 1,2-Naphthoquinone diazide-5-sulfonyl chloride; Photosensitive sulfonyl chloride
EINECS	223-226-8

Quality Control

Every batch of 2-Diazo-1-Naphthol-5-Sulfonyl Chloride undergoes rigorous analytical testing to ensure consistent purity and performance. Our quality assurance protocol includes advanced chromatographic and spectroscopic methods to verify chemical identity and quantify impurities. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available for all commercial and research quantities, supporting compliance with internal and regulatory specifications.

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 and light-sensitive nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 20 ppm

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