Description

Calcium 2-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate is a high-purity azo dye intermediate and pigment. This compound is valued for its excellent colorant properties and stability, serving as a critical building block in the synthesis of high-performance pigments. It is essential for manufacturers in the pigments, dyes, plastics, and specialty coatings industries who require consistent quality and reliable supply for their formulations.

Application

• Primary intermediate for the synthesis of high-performance azo pigments and dyes.
• Key component in the production of pigments for plastics and synthetic resins, providing color stability.
• Used in manufacturing industrial and automotive coatings that require durability and UV resistance.
• Essential raw material for printing inks, including packaging and publication grades.
• Employed in the coloration of textile fibers and fabrics.
• Potential use in the research and development of specialty colorants for niche applications.

Basic Information

Product Name	Calcium 2-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate
CAS No.	67990-37-8
Molecular Formula	C20H10CaN2O7S2
Molecular Weight	486.50 g/mol (approx.)
Synonyms	Calcium 2-[(2-Hydroxynaphthyl)Azo]-1,5-Naphthalenedisulfonate; C.I. Pigment Red 57:1 Calcium Salt; Calcium 3-Hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-1,5-naphthalenedisulfonate; Calcium 2-Hydroxy-1-naphthylazo-naphthalene-1,5-disulfonate; Calcium Lithol Rubine; Pigment Red 57:1; C.I. 15850:1; Lithol Rubine B Ca
EINECS	Contact for details

Quality Control

Our production of Calcium 2-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and chemical composition. Certificates of Analysis (COA) are provided and 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). Keep away from incompatible materials and sources of ignition. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Slightly soluble in water

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