Description

Calcium 5-Ethoxy-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is a high-purity azo dye complex salt, valued for its excellent color strength and stability in demanding industrial applications. This compound is essential for manufacturers requiring consistent, vibrant coloration with reliable performance under specific processing conditions. It is primarily utilized in the production of specialized pigments, inks, and coatings for the plastics, textiles, and advanced materials sectors.

Application

• Industrial Pigment Manufacturing: As a key colorant for plastics, synthetic fibers, and masterbatches.
• Specialty Inks: Used in formulations for packaging, security, and high-performance printing inks.
• Coatings and Paints: Provides coloration for industrial and decorative coatings requiring light and chemical stability.
• Textile Dyeing: Employed in the coloration of synthetic fabrics and non-woven materials.
• Research & Development: Serves as a standard or intermediate in chemical synthesis and material science research.
• Functional Additives: Potential use in color-coded polymers and specialty functional materials.

Basic Information

Product Name	Calcium 5-Ethoxy-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate
CAS No.	97659-34-2
Molecular Formula	C19H14CaN2O6S
Molecular Weight	438.47 g/mol
Synonyms	Calcium 5-ethoxy-2-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate; C.I. Pigment Red 57:1 Calcium Salt; Calcium Lithol Rubine; Calcium 3-Hydroxy-4-[(2-hydroxy-1-naphthyl)azo]-naphthalenesulfonate; Calcium 4-[(2-Hydroxy-1-naphthyl)azo]-3-hydroxynaphthalene-1-sulphonate; Calcium 4-[(2-Hydroxy-1-naphthyl)azo]-3-hydroxynaphthalene-1-sulfonate; Calcium 4-(2-Hydroxy-1-naphthylazo)-3-hydroxynaphthalene-1-sulfonate; Calcium Salt of 5-Ethoxy-2-[(2-hydroxy-1-naphthalenyl)azo]benzenesulfonic Acid
EINECS	Contact for details

Quality Control

Our Calcium 5-Ethoxy-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure compliance with industry specifications for color value, purity, and physical properties. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

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); keep the container 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
Color Strength	100 ± 5% (vs. Std.)
Solubility	Contact for details

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