Description

Benzenesulfonic Acid, 5-Chloro-2-4,5-Dihydro-3-Methyl-1-(4-Methylphenyl)-5-Oxo-1H-Pyrazol-4-Ylazo-4-Methyl-, Calcium Salt is a specialized azo dye intermediate and metal complex salt. This compound is valued for its role in synthesizing high-performance pigments and colorants with enhanced stability and specific chromatic properties. It is primarily required by manufacturers in the pigments, dyes, and specialty chemical industries for producing advanced coloring agents.

Application

• Primary Intermediate for Azo Pigments: Key starting material in the synthesis of high-performance, calcium-based azo pigments.
• Specialty Dye Manufacturing: Used in the production of complex dyes for plastics, inks, and coatings requiring specific lightfastness and thermal stability.
• Functional Colorants: Potential application in creating colorants for non-textile uses, such as masterbatches for polymers.
• Research & Development: Serves as a crucial reagent in chemical R&D for developing new chromophoric systems and metal-complex dyes.
• Industrial Coatings: Can be utilized in formulating pigments for automotive and industrial paints where durability is critical.

Basic Information

Item	Details
Product Name	Benzenesulfonic Acid, 5-Chloro-2-4,5-Dihydro-3-Methyl-1-(4-Methylphenyl)-5-Oxo-1H-Pyrazol-4-Ylazo-4-Methyl-, Calcium Salt
CAS No.	163102-83-8
Molecular Formula	C18H15ClN4O4S·1/2Ca
Molecular Weight	~443.91 g/mol (Free acid)
Synonyms	Calcium 5-Chloro-4-[(4,5-dihydro-3-methyl-1-(4-methylphenyl)-5-oxo-1H-pyrazol-4-yl)azo]-4-methylbenzenesulfonate; C.I. Pigment Yellow 191:1; PY 191:1; Calcium Salt of 5-Chloro-2-[4,5-dihydro-3-methyl-1-(4-methylphenyl)-5-oxo-1H-pyrazol-4-yl)azo]-4-methylbenzenesulfonic Acid; Benzenesulfonic acid, 5-chloro-2-[(4,5-dihydro-3-methyl-1-(4-methylphenyl)-5-oxo-1H-pyrazol-4-yl)azo]-4-methyl-, calcium salt (1:?); Azo Pigment Calcium Complex
EINECS	Contact for details

Quality Control

Our production of this specialty intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity for sensitive synthesis processes. Quality is verified through analytical methods including HPLC, FT-IR, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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 area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Calcium Content	Conforms to theoretical range

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