Description

Barium 3-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate is a high-purity barium salt of an azo dye intermediate, valued for its role in producing vivid and stable pigments. This compound is essential for manufacturers requiring precise colorants with excellent performance characteristics. It is primarily utilized in the production of high-grade pigments for industrial coatings, plastics, and specialty inks.

Application

• Primary Intermediate for Azo Pigments: Serves as a key precursor in the synthesis of high-performance red and maroon azo pigments.
• Industrial Coatings: Used in manufacturing pigments for automotive, industrial, and protective coatings that demand color fastness and durability.
• Plastics and Masterbatches: Imparts stable coloration to engineering plastics, PVC, and polyolefins.
• Specialty Printing Inks: Employed in the formulation of inks for packaging and security printing applications.
• Textile Dyeing Auxiliary: Acts as a component in dye systems for synthetic fibers where metal-complex dyes are required.

Basic Information

Item	Details
Product Name	Barium 3-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate
CAS No.	67990-34-5
Molecular Formula	C20H12BaN2O7S2
Molecular Weight	Contact for details
Synonyms	Barium 3-[(2-Hydroxy-1-naphthyl)azo]naphthalene-1,5-disulfonate; C.I. Pigment Red 57:1 (Barium Salt); Barium Salt of 3-Hydroxy-4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1,5-disulfonic Acid; Barium Lithol Rubine; Barium 2-Hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-1,5-naphthalenedisulfonate; 1,5-Naphthalenedisulfonic acid, 3-[(2-hydroxy-1-naphthyl)azo]-, barium salt (1:1)
EINECS	Contact for details

Quality Control

Our production of Barium 3-[(2-Hydroxynaphthyl)Azo]Naphthalene-1,5-Disulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for purity, color strength, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing assay, heavy metal content, and physical properties 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, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Red to maroon powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 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.