Description

3-Diazo-3,4-Dihydro-4-Oxonaphthalene-2-Sulphonyl Chloride is a specialized, high-purity diazonaphthoquinone sulfonyl chloride derivative, serving as a critical photoactive intermediate in advanced material synthesis. Its core value lies in enabling precise chemical modifications and functionalization, which are essential for developing high-performance, light-sensitive polymers and coatings. This compound is primarily needed by manufacturers in the electronics, photoresist, and specialty chemical industries for applications demanding exacting purity and reactivity.

Application

• Photoresist Formulation: A key photoactive compound (PAC) precursor in the synthesis of diazonaphthoquinone (DNQ) sulfonate esters for positive-tone photoresists used in semiconductor and microelectronics manufacturing.
• Advanced Polymer Synthesis: Used as a reactive sulfonylating agent to introduce photo-crosslinkable or acid-generating functional groups into polymer backbones for specialty coatings and films.
• Chemical Amplification Systems: Acts as a precursor for photoacid generators (PAGs) in chemically amplified resist systems for deep-UV (DUV) and extreme-UV (EUV) lithography.
• Printing Plate Production: Employed in the chemical synthesis of light-sensitive components for high-resolution offset printing plates.
• Organic Synthesis Intermediate: Serves as a versatile building block for synthesizing complex organic molecules, dyes, and pigments due to its reactive diazo and sulfonyl chloride groups.
• Surface Modification Agent: Used to create photo-reactive surfaces on various substrates for adhesion promotion or patterned functionalization.

Basic Information

Product Name	3-Diazo-3,4-Dihydro-4-Oxonaphthalene-2-Sulphonyl Chloride
CAS No.	36443-15-9
Molecular Formula	C₁₀H₅ClN₂O₃S
Molecular Weight	268.67 g/mol
Synonyms	2-Diazo-1-naphthol-4-sulfonyl chloride; 1,2-Naphthoquinone-2-diazide-4-sulfonyl chloride (2,1,4-DNQ sulfonyl chloride); 4-Oxo-3-diazo-3,4-dihydronaphthalene-2-sulfonyl chloride; NDSC; DNQ sulfonyl chloride; Photoactive Compound Precursor; 36443-15-9; Diazonaphthoquinone sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 3-Diazo-3,4-Dihydro-4-Oxonaphthalene-2-Sulphonyl Chloride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity, critical for sensitive photolithographic applications. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance protocols.

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 sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from heat, sparks, and incompatible materials such as strong bases and oxidizing agents.

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	≤ 10 ppm
Solubility Test	Clear solution in specified solvents

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