Description

Disodium 5-[(4-Acetamidophenyl)Azo]-8-[(4-Amino-6-Sulphonatonaphthyl)Azo]Naphthalene-2-Sulphonate is a high-purity, disazo-based anionic dye intermediate, also known as Acid Black 210. This compound is valued for its ability to impart deep, durable shades and its excellent solubility in aqueous systems, making it a critical component in specialized dye synthesis. It is primarily sought after by manufacturers in the textile, leather, and specialty ink industries for producing high-performance colorants.

Application

• Textile Dyeing: A key intermediate for synthesizing acid dyes used on protein fibers like wool, silk, and nylon, providing excellent wash and light fastness.
• Leather Finishing: Used in the production of dyes for coloring leather goods, offering rich, uniform coloration.
• Ink Manufacturing: Serves as a precursor for specialty inks, including those for inkjet printing and security applications.
• Paper Coloration: Employed in the manufacture of dyes for high-quality paper and specialty packaging.
• Biological Staining: Potential use as a staining agent in histology and microscopy due to its specific chromogenic properties.
• Research & Development: Used as a standard or intermediate in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	Disodium 5-[(4-Acetamidophenyl)Azo]-8-[(4-Amino-6-Sulphonatonaphthyl)Azo]Naphthalene-2-Sulphonate
CAS No.	67906-49-4
Molecular Formula	C34H24N6Na2O8S2
Molecular Weight	762.69 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 5-[(4-acetamidophenyl)azo]-8-[(4-amino-6-sulphonato-1-naphthyl)azo]naphthalene-2-sulphonate; 2,7-Naphthalenedisulfonic acid, 5-[(4-(acetylamino)phenyl)azo]-8-[(4-amino-6-sulfo-1-naphthalenyl)azo]-, disodium salt; Acid Leather Black 210; Azo Black 210; Disazo Black Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of Disodium 5-[(4-Acetamidophenyl)Azo]-8-[(4-Amino-6-Sulphonatonaphthyl)Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) detailing all quality parameters are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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