Description

Pentasodium 4-[[4-[(3,6-Disulphonato-1-Naphthyl)Azo]-7-Sulphonato-1-Naphthyl]Azo]-3-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing vibrant and stable dyes and pigments, particularly in applications requiring high color strength and fastness properties. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking consistent quality and reliable supply for their production processes.

Application

• Textile Dyeing: A key intermediate for the production of acid dyes and direct dyes used on wool, silk, nylon, and paper.
• Ink Manufacturing: Used in the synthesis of pigments for printing inks, including those for packaging and security applications.
• Industrial Coatings: Serves as a precursor for colorants in paints, lacquers, and other surface coating formulations.
• Leather Processing: Employed in the manufacture of dyes for coloring leather goods.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Specialty Chemicals: Acts as a building block for more complex dye molecules and functional colorants.

Basic Information

Product Name	Pentasodium 4-[[4-[(3,6-Disulphonato-1-Naphthyl)Azo]-7-Sulphonato-1-Naphthyl]Azo]-3-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	13000-39-0
Molecular Formula	C30H12N4Na5O19S5
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 300310; 4-[[4-[(3,6-Disulfo-1-naphthyl)azo]-7-sulfo-1-naphthyl]azo]-3-hydroxynaphthalene-2,7-disulfonic acid, pentasodium salt; 1-Naphthalenesulfonic acid, 3,6-disulfo-4-[(7-sulfo-4-[(3-hydroxy-2,7-disulfo-1-naphthalenyl)azo]-1-naphthalenyl)azo]-, pentasodium salt; Pontacyl Black E; Azo Black; Direct Black 210; Disazo dye intermediate
EINECS	Contact for details

Quality Control

Our Pentasodium 4-[[4-[(3,6-Disulphonato-1-Naphthyl)Azo]-7-Sulphonato-1-Naphthyl]Azo]-3-Hydroxynaphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color value, and performance characteristics. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, 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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

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

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