Description

Calcium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]Toluene-4-Sulphonate] is a high-purity, organometallic azo dye complex valued for its excellent color strength and stability. This compound is engineered to deliver consistent performance as a key pigment intermediate and colorant in demanding industrial applications. It is primarily utilized by manufacturers in the pigments, inks, plastics, and specialty coatings industries seeking reliable and vibrant coloration.

Application

• Pigment Manufacturing: Serves as a critical precursor or intermediate in the synthesis of high-performance organic pigments, particularly for yellows, oranges, and reds.
• Industrial Inks: Used in the formulation of solvent-based and paste inks for packaging, printing, and coding applications requiring lightfastness.
• Plastics and Polymers: Imparts coloration to engineering plastics, masterbatches, and synthetic fibers where thermal stability is essential.
• Specialty Coatings: Employed in coatings for automotive, industrial, and decorative finishes that demand durability and color consistency.
• Research & Development: Acts as a standard or reagent in chemical research focused on dye chemistry, material science, and analytical method development.

Basic Information

Product Name	Calcium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]Toluene-4-Sulphonate]
CAS No.	67990-35-6
Molecular Formula	C34H22CaCl2N4O8S2
Molecular Weight	785.72 g/mol
Synonyms	Calcium 2-Chloro-5-[(2-hydroxy-1-naphthyl)azo]toluene-4-sulphonate; C.I. Pigment Red 48:2 (Calcium Salt); Calcium Lithol Rubine BCA; Calcium Salt of 2B Acid; 2-Chloro-5-[(2-hydroxy-1-naphthalenyl)azo]-4-methylbenzenesulfonic Acid Calcium Salt; Calcium 4-Methyl-2-[(2-hydroxy-1-naphthyl)azo]-5-chlorobenzenesulfonate; Calcium 2B Red; Pigment Red 48:2
EINECS	Contact for details

Quality Control

Our production of Calcium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]Toluene-4-Sulphonate] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color value, purity, and chemical composition. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Slightly soluble in water, soluble in alkaline solutions

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