Description

Ethyl 3,4,5-Tris[[(6-Diazo-5,6-Dihydro-5-Oxo-1-Naphthyl)Sulphonyl]Oxy]Benzoate CAS NO 73003-81-3 is a specialized, high-molecular-weight diazonaphthoquinone (DNQ) derivative, a critical class of compounds in advanced material science. Its primary value lies in its function as a highly effective photoactive compound (PAC), enabling precise control over solubility changes upon exposure to specific light wavelengths. This makes it an essential component for manufacturers requiring ultra-fine patterning and resolution in microelectronics and high-performance imaging systems.

Application

• Photoresist Formulations: A key photoacid generator (PAG) or sensitizer in advanced chemical amplification (CA) photoresists for semiconductor and integrated circuit (IC) manufacturing.
• Advanced Lithography: Used in deep ultraviolet (DUV), extreme ultraviolet (EUV), and other next-generation lithography processes for creating sub-micron and nanometer-scale features.
• Printing Plate Production: Serves as a photosensitive component in high-resolution, computer-to-plate (CtP) and other premium offset printing plate coatings.
• Optical Material Fabrication: Employed in the production of waveguides, micro-optical elements, and other photonic devices requiring precise light-induced patterning.
• Polymer Modification: Acts as a cross-linking or functionalization agent for polymers under controlled light exposure, used in specialty coatings and adhesives.
• Research & Development: A crucial reagent for academic and industrial R&D in photochemistry, material science, and the development of novel photosensitive systems.

Basic Information

Item	Details
Product Name	Ethyl 3,4,5-Tris[[(6-Diazo-5,6-Dihydro-5-Oxo-1-Naphthyl)Sulphonyl]Oxy]Benzoate
CAS No.	73003-81-3
Molecular Formula	C43H25N6O16S3
Molecular Weight	977.88 g/mol
Synonyms	Ethyl 3,4,5-Tris[(6-diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonyl)oxy]benzoate; Tris-DNQ Ester; DNQ-Based Photoactive Compound; 1,2-Naphthoquinone-2-diazide-5-sulfonic Acid Tris(Ethyl Gallate) Ester; PAC 73003-81-3; Ethyl Gallate Tris(1,2-naphthoquinonediazide-5-sulfonate); Tris(1-oxo-2-diazo-1,2-dihydronaphthalene-5-sulfonato) Ethyl Gallate; Light Sensitizer 73003-81-3
EINECS	Contact for details

Quality Control

Every batch of our Ethyl 3,4,5-Tris[[(6-Diazo-5,6-Dihydro-5-Oxo-1-Naphthyl)Sulphonyl]Oxy]Benzoate is manufactured and tested under strict quality management systems. We provide comprehensive analytical data to ensure batch-to-batch consistency and performance reliability for critical applications like photolithography. A detailed Certificate of Analysis (COA) is supplied with each shipment, reporting key parameters including purity, spectral identification, and impurity profile. Our quality commitment aligns with the stringent requirements of the electronics and advanced materials industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This compound is light-sensitive and must be handled under yellow or red safelight conditions in laboratory environments to prevent premature decomposition. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Area %)
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Specific Impurities (HPLC)	Individual unknown ≤ 0.5%, Total unknowns ≤ 1.0%

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