Description

Calcium 1-Amino-4-[(4-Methyl-2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate. This compound is valued for its role as a critical precursor in the synthesis of vibrant and stable colorants. It is primarily required by manufacturers in the textile, leather, and specialty ink industries for producing high-performance dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: Essential for synthesizing a range of red, orange, and brown azo dyes used in textile and fabric dyeing.
• Leather Coloring Agent: Used in the formulation of dyes for coloring leather goods, providing good penetration and color fastness.
• Specialty Ink Production: Serves as a key component in manufacturing inks for packaging, security printing, and other industrial applications.
• Paper Dyeing: Employed in the production of colored papers and paperboard where consistent hue is required.
• Research & Development: Used in chemical research labs for developing new colorant molecules and studying dye properties.
• Pigment Manufacturing: Acts as a starting material for producing lake pigments used in paints and coatings.

Basic Information

Product Name	Calcium 1-Amino-4-[(4-Methyl-2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	65152-20-7
Molecular Formula	C17H12CaN3O6S2
Molecular Weight	466.49 g/mol
Synonyms	Calcium 1-Amino-4-[(4-methyl-2-sulfophenyl)azo]-2-naphthalenesulfonate; C.I. Acid Red 337, Calcium salt; 1-Amino-4-[(4-methyl-2-sulfophenyl)azo]-2-naphthalenesulfonic acid, calcium salt (1:1); Acid Red 337, Calcium Lake; 65152-20-7; Calcium 4-[(4-Methyl-2-sulfophenyl)azo]-1-amino-2-naphthalenesulfonate
EINECS	Contact for details

Quality Control

Our production of Calcium 1-Amino-4-[(4-Methyl-2-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing assay, impurity profile, 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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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