Description

Calcium 2-[(2-Hydroxy-6-Sulphonato-1-Naphthyl)Azo]Naphthalenesulphonate is a high-purity, water-soluble azo dye complex valued for its excellent color strength and stability. This compound is essential for industries requiring consistent, vibrant, and durable coloration in challenging environments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings sectors for its reliable performance.

Application

• Textile Dyeing: Used as a key colorant for dyeing cotton, wool, and synthetic fibers, offering good wash and light fastness.
• Ink Formulation: Serves as a pigment in the production of printing inks for packaging, publications, and security applications.
• Industrial Coatings: Incorporated into paints and coatings for plastics, metals, and wood to provide durable and vibrant coloration.
• Paper Coloring: Applied in the surface coloring and coating of specialty papers and cardboard.
• Leather Finishing: Used in dyes and finishes for leather goods to achieve consistent and rich colors.
• Plastics and Masterbatch: Employed as a colorant in the manufacturing of colored plastics and polymer concentrates.

Basic Information

Product Name	Calcium 2-[(2-Hydroxy-6-Sulphonato-1-Naphthyl)Azo]Naphthalenesulphonate
CAS No.	83249-60-9
Molecular Formula	C20H12CaN2O8S2
Molecular Weight	512.51 g/mol
Synonyms	Calcium 2-[(2-Hydroxy-6-sulfo-1-naphthyl)azo]-1-naphthalenesulfonate; C.I. Pigment Red 57:1; Lithol Rubine B Ca; Permanent Red Toner; Calcium Lithol Rubine; 2-Naphthalenesulfonic acid, 6-hydroxy-5-((2-hydroxy-1-naphthalenyl)azo)-, calcium salt (1:1); Calcium 6-hydroxy-5-[(2-hydroxy-1-naphthyl)azo]naphthalene-2-sulphonate
EINECS	Contact for details

Quality Control

Our production of Calcium 2-[(2-Hydroxy-6-Sulphonato-1-Naphthyl)Azo]Naphthalenesulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters for color value, purity, and physical properties. Certificates of Analysis (COA) documenting these results 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 when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Red to bluish-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
Water Solubility	Freely soluble

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