Description

2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Naphthalene-1-Sulphonic Acid is a high-purity azo dye intermediate, valued for its precise chemical structure and consistent performance in demanding synthesis processes. This compound is essential for manufacturers requiring reliable and high-quality precursors to produce vibrant and stable colorants. It is primarily utilized by the specialty chemical, textile dye, and pigment industries for the synthesis of advanced dyes and functional colorants.

Application

• Key intermediate for the synthesis of high-performance azo dyes and pigments used in textiles and inks.
• Precursor in the manufacturing of specialized colorants for plastics and polymers.
• Used in research and development of novel functional dyes for non-textile applications.
• Employed in the production of industrial colorants for coatings and paints.
• Potential use in the synthesis of biological stains and indicators for laboratory use.
• Starting material for creating custom dye molecules with specific light-fastness and solubility properties.

Basic Information

Product Name	2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Naphthalene-1-Sulphonic Acid
CAS No.	36942-58-2
Molecular Formula	C20H16N4O4S
Molecular Weight	408.43 g/mol
Synonyms	1-Naphthalenesulfonic acid, 2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-; 2-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-1-naphthalenesulfonic acid; Azo dye intermediate 36942-58-2; 1-Phenyl-3-methyl-4-(2-sulfo-1-naphthylazo)-5-pyrazolone; 4-(2-Sulfo-1-naphthylazo)-1-phenyl-3-methyl-5-pyrazolone; Pyrazolone azo dye intermediate; Acid Orange 74 related intermediate
EINECS	Contact for details

Quality Control

Our 2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Naphthalene-1-Sulphonic Acid is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistent chemical composition, meeting the exacting standards required for dye intermediate synthesis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of ignition. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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