Description

Calcium Dihydrogen Bis[4-[(4-Chloro-6-Sulphonato-m-Tolyl)Azo]-3-Hydroxy-2-Naphthoate] is a high-purity, complex azo dye intermediate essential for producing vibrant and stable pigments. This compound matters for its role in creating high-performance colorants with excellent lightfastness and chemical resistance for demanding industrial applications. It is primarily needed by manufacturers in the pigments, inks, coatings, and specialty plastics industries seeking to formulate superior, durable colors.

Application

• Primary Intermediate for Azo Pigments: Serves as a key precursor in the synthesis of high-performance red and maroon azo pigments.
• Industrial Coatings and Paints: Used to manufacture pigments for automotive, industrial, and architectural coatings requiring weather resistance.
• Printing Inks: Essential for producing pigments used in high-quality publication gravure, flexographic, and packaging inks.
• Plastics and Masterbatch Coloring: Imparts stable coloration to engineering plastics, PVC, and synthetic fibers.
• Specialty Dyes: Can be utilized in the formulation of specialized dyes for niche applications.

Basic Information

Item	Details
Product Name	Calcium Dihydrogen Bis[4-[(4-Chloro-6-Sulphonato-m-Tolyl)Azo]-3-Hydroxy-2-Naphthoate]
CAS No.	52202-90-1
Molecular Formula	C44H26CaCl2N4O14S2
Molecular Weight	1021.88 g/mol
Synonyms	Calcium 4-[(4-Chloro-2-sulfo-5-methylphenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; C.I. Pigment Red 48:2; Calcium Salt of Pigment Red 48; 2-Naphthalenecarboxylic acid, 4-[(4-chloro-2-sulfo-5-methylphenyl)azo]-3-hydroxy-, calcium salt (2:1); Permanent Red 2B; Lithol Scarlet 4440; C.I. 15865:2
EINECS	Contact for details

Quality Control

Our production of Calcium Dihydrogen Bis[4-[(4-Chloro-6-Sulphonato-m-Tolyl)Azo]-3-Hydroxy-2-Naphthoate] adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. The material is manufactured under a quality management system and undergoes rigorous testing, including HPLC assay, spectrophotometric analysis, and impurity profiling. Certificates of Analysis (COA) detailing purity, strength, and physical specifications are available upon request to support your quality assurance processes.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Slightly soluble in water

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