Description

o-Tolyl 4-Diazo-3,4-Dihydro-2-Oxonaphthalene-1-Sulphonate is a specialized diazonium salt derivative, a key photochemical intermediate valued for its ability to generate reactive species upon exposure to light. This compound is essential for applications requiring precise photochemical patterning and cross-linking. It is primarily used by manufacturers in the electronics and advanced materials sectors for photoresist formulations and photoinitiator systems.

Application

• Photoresist Formulations: Acts as a critical photoactive compound (PAC) in the production of high-resolution photoresists for semiconductor and printed circuit board (PCB) manufacturing.
• Photoinitiator Systems: Serves as a key component in UV-curable inks, coatings, and adhesives, initiating polymerization upon light exposure for rapid curing.
• Lithographic Plates: Used in the chemical synthesis of compounds for computer-to-plate (CTP) and other advanced lithographic printing processes.
• Chemical Synthesis: Functions as a versatile diazonium intermediate for synthesizing dyes, pigments, and other complex aromatic compounds.
• Research & Development: Employed in academic and industrial R&D labs for studying photochemical reactions and developing new photopolymerizable materials.

Basic Information

Product Name	o-Tolyl 4-Diazo-3,4-Dihydro-2-Oxonaphthalene-1-Sulphonate
CAS No.	83846-93-9
Molecular Formula	C₁₇H₁₂N₂O₄S
Molecular Weight	340.35 g/mol
Synonyms	2-Methylphenyl 4-Diazo-3,4-dihydro-2-oxo-1-naphthalenesulfonate; 4-Diazo-3,4-dihydro-2-oxo-1-naphthalenesulfonic Acid o-Tolyl Ester; o-Tolyl Ester of 4-Diazo-3,4-dihydro-2-oxo-1-naphthalenesulfonic Acid; 1,2-Naphthoquinone-2-diazide-4-sulfonate o-Tolyl Ester; ND-O; Photosensitive Diazonaphthoquinone Sulfonate Ester; DNQ Sulfonate Ester; PAC Derivative
EINECS	Contact for details

Quality Control

Our o-Tolyl 4-Diazo-3,4-Dihydro-2-Oxonaphthalene-1-Sulphonate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements of photochemical applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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). This product is light-sensitive and must be stored away from light to maintain stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
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.