Description

Calcium (4Z)-4-[(5-Chloro-4-Methyl-2-Sulfonato-Phenyl)Hydrazinylidene]-3-Oxo-Naphthalene-2-Carboxylate is a high-purity, water-soluble calcium salt of a complex azo dye intermediate. This compound is valued for its role as a key precursor in the synthesis of high-performance pigments and dyes, offering excellent color strength and stability. It is primarily utilized by manufacturers in the pigments, specialty dyes, and advanced materials industries seeking reliable intermediates for their production processes.

Application

• Primary Intermediate for Azo Pigments: Serves as a crucial building block in the manufacturing of high-performance yellow to orange azo pigments.
• Specialty Dye Synthesis: Used in the production of specialized dyes for industrial applications requiring specific lightfastness and chemical resistance.
• Functional Colorants: Potential use in creating colorants for plastics, inks, and coatings where the calcium ion imparts specific handling or performance properties.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagents: May be used as a standard or reagent in analytical chemistry for method development and calibration.

Basic Information

Product Name	Calcium (4Z)-4-[(5-Chloro-4-Methyl-2-Sulfonato-Phenyl)Hydrazinylidene]-3-Oxo-Naphthalene-2-Carboxylate
CAS No.	78170-94-2
Molecular Formula	C19H11CaClN2O7S
Molecular Weight	486.90 g/mol
Synonyms	Calcium 4-[(5-Chloro-4-methyl-2-sulfophenyl)hydrazono]-3-oxo-2-naphthalenecarboxylate; C.I. Pigment Yellow 191:1; Calcium Salt of C.I. Acid Yellow 191; Pigment Yellow 191 Calcium Lake; 5-Chloro-4-methyl-2-sulfonatophenylhydrazone of 3-Oxo-2-naphthoic Acid, Calcium Salt; Calcium (4Z)-4-[(5-Chloro-4-Methyl-2-Sulfonato-Phenyl)Hydrazinylidene]-3-Oxo-2-Naphthoate; Azo Pigment Intermediate Calcium Salt
EINECS	Contact for details

Quality Control

Our production of Calcium (4Z)-4-[(5-Chloro-4-Methyl-2-Sulfonato-Phenyl)Hydrazinylidene]-3-Oxo-Naphthalene-2-Carboxylate adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial applications. Each lot is analyzed to confirm identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting key specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Corresponds to calcium salt
Heavy Metals (as Pb)	≤ 20 ppm
Chloride Content	Conforms to theoretical
Solubility (Water)	Soluble, clear solution

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