Description

Calcium 4-[(2,4-Dichloro-3-Methyl-6-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate is a high-purity azo dye intermediate and pigment, valued for its excellent color strength and stability. This compound is critical for producing vibrant, durable red and maroon shades in demanding industrial applications. It is primarily sought by manufacturers in the pigments, inks, coatings, and specialty plastics industries who require consistent quality and reliable supply for their formulations.

Application

• Primary raw material for the synthesis of high-performance azo pigments and dyes.
• Colorant for industrial inks, including printing inks and toners.
• Pigment for coatings and paints, providing weather-resistant coloration.
• Coloring agent for plastics and synthetic fibers.
• Intermediate in the production of specialized textile dyes.
• Used in the formulation of artists' colors and other specialty color products.

Basic Information

Product Name	Calcium 4-[(2,4-Dichloro-3-Methyl-6-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate
CAS No.	67906-57-4
Molecular Formula	C18H10CaCl2N2O6S
Molecular Weight	477.34 g/mol
Synonyms	Calcium 4-[(2,4-Dichloro-3-methyl-6-sulfophenyl)azo]-3-hydroxy-2-naphthoate; C.I. Pigment Red 48:2; Calcium 2-[(2,4-Dichloro-5-methylphenyl)azo]-3-hydroxy-1-naphthoate-4-sulfonate; Calcium Lithol Rubine; Permanent Red 2B Calcium Salt; Pigment Red 48:2; 2B Red Calcium Salt; 67906-57-4
EINECS	Contact for details

Quality Control

Our production of Calcium 4-[(2,4-Dichloro-3-Methyl-6-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material is characterized using advanced analytical techniques including HPLC, FT-IR, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	15.0% - 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Soluble Matter	≤ 1.0%
Shade & Strength	Within agreed standard

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