Description

Ammonium Hydrogen 4-[3-[4-(Dimethylamino)Phenyl]Allylidene]-4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate is a high-purity, water-soluble functional dye intermediate. This compound is valued for its precise molecular structure, which is critical for imparting specific optical properties in advanced applications. It is primarily required by manufacturers in the specialty chemicals sector for producing high-performance dyes, pigments, and optical materials.

Application

• Synthesis of Reactive Dyes: A key intermediate for manufacturing reactive dyes used in textile coloring, particularly for cotton and other cellulose fibers.
• Laser Dye Precursor: Used in the production of laser dyes for tunable dye lasers and other photonic applications.
• Functional Pigment Manufacturing: Serves as a building block for creating advanced organic pigments with specific light-fastness and color properties.
• Optical Brightening Agents (OBAs): An intermediate in the synthesis of certain classes of fluorescent whitening agents for paper and detergent industries.
• Biomedical Staining: Potential use as a precursor for developing specialized histological or fluorescent stains for biological imaging.
• Photographic Sensitizers: Employed in research and development of sensitizing dyes for photographic and imaging technologies.
• Non-linear Optical (NLO) Materials: Investigated for use in the development of materials for optoelectronics and photonics due to its conjugated system.

Basic Information

Product Name	Ammonium Hydrogen 4-[3-[4-(Dimethylamino)Phenyl]Allylidene]-4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate
CAS No.	94266-11-2
Molecular Formula	C22H23N4O6S (Ammonium salt form)
Molecular Weight	471.51 g/mol
Synonyms	4-[3-[4-(Dimethylamino)phenyl]allylidene]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid ammonium salt; Ammonium 4-[3-[4-(dimethylamino)phenyl]allylidene]-2,4-dihydro-5-oxo-1-(4-sulfophenyl)pyrazole-3-carboxylate; Reactive Dye Intermediate 94266-11-2; Pyrazolone-based dye intermediate; C.I. Reactive Yellow 176 intermediate; Water-soluble pyrazolone derivative; Ammonium salt of a sulfonated pyrazolone dye.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure consistent molecular integrity and performance. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with each shipment. We support compliance with global regulatory frameworks, including REACH.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 95.0% (Area %)
Assay	≥ 90.0% (on dried basis)
Water Content (KF)	≤ 5.0 %
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, yellow solution

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