Description

Cobaltate(3-), Bis[3-Hydroxy-4-[(2-Hydroxy- 1-Naphthalenyl)Azo]-7-Nitro-1-Naphthalenesulfonato (3-)]-, Trisodium is a complex, water-soluble azo dye metal complex primarily valued for its intense color and stability. This compound matters for applications requiring a specific, durable colorant with good light and heat resistance, particularly in demanding industrial environments. It is needed by manufacturers in the textile, ink, and specialty coatings industries, where it serves as a key pigment or dye intermediate.

Application

• Textile Dyeing and Printing: Used as a colorant for synthetic and natural fibers, offering good wash and light fastness.
• Industrial Ink Formulation: Serves as a pigment in the production of inks for packaging, coding, and marking.
• Specialty Coatings and Paints: Imparts color to coatings where specific shade and durability are required.
• Plastics and Polymers Coloration: Acts as a colorant masterbatch for engineering plastics and synthetic materials.
• Paper and Leather Coloring: Employed in dyeing processes for specialty papers and finished leather goods.
• Research and Development: Utilized as a chemical intermediate or reference standard in analytical and synthetic chemistry laboratories.

Basic Information

Product Name	Cobaltate(3-), Bis[3-Hydroxy-4-[(2-Hydroxy- 1-Naphthalenyl)Azo]-7-Nitro-1-Naphthalenesulfonato (3-)]-, Trisodium
CAS No.	125378-89-4
Molecular Formula	C34H18CoN6Na3O14S2
Molecular Weight	~ 950.7 g/mol
Synonyms	Trisodium bis(3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]-7-nitronaphthalene-1-sulfonato)cobaltate(3-); C.I. Acid Black 194; Acid Black 194; Cobalt complex of an azo dye derived from 2-naphthol and nitro J-acid; Trisodium 3-hydroxy-4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-1-naphthalenesulphonate cobalt complex; Azo dye cobalt complex; Cobalt azo dye sulfonate
EINECS	Contact for details

Quality Control

Our Cobaltate(3-), Bis[3-Hydroxy-4-[(2-Hydroxy- 1-Naphthalenyl)Azo]-7-Nitro-1-Naphthalenesulfonato (3-)]-, Trisodium is produced under strict quality management systems. Each batch undergoes rigorous testing for identity, purity, color strength, and impurity profile to ensure consistency and performance. Certificates of Analysis (COA) detailing specifications such as assay, heavy metal content, and solubility 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 5% (vs. Standard)
Loss on Drying	Max. 5.0%
Heavy Metals (as Pb)	Max. 20 ppm
Water Solubility	Conforms

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