Description

Tetrasodium 7-[[4-[[4-[(Sulphonatomethyl)Amino]Phenyl]Azo]Phenyl]Azo]Naphthalene-1,3,5-Trisulphonate is a high-purity, water-soluble azo dye intermediate and specialty chemical. This compound is valued for its strong chromophore and multiple sulphonate groups, which provide excellent solubility and binding properties in aqueous systems. It is primarily required by manufacturers in the textile, paper, leather, and specialty ink industries for producing vibrant, wash-fast dyes and pigments.

Application

• Textile Dyeing: As a key intermediate for synthesizing direct, acid, and reactive dyes for cotton, wool, silk, and nylon.
• Paper Coloring: Used in the production of dyes for coloring paper and paperboard, offering good affinity to cellulose fibers.
• Leather Finishing: Employed in the formulation of dyes for leather goods, providing rich and durable coloration.
• Ink Manufacturing: Serves as a colorant intermediate in the production of specialty inks, including inks for packaging and security printing.
• Biological Staining: Potential use as a staining agent or intermediate in histological and cytological applications due to its azo structure.
• Chemical Research: Utilized as a building block in organic synthesis and materials science research for developing new functional dyes.

Basic Information

Product Name	Tetrasodium 7-[[4-[[4-[(Sulphonatomethyl)Amino]Phenyl]Azo]Phenyl]Azo]Naphthalene-1,3,5-Trisulphonate
CAS No.	68400-39-5
Molecular Formula	C23H14N6Na4O12S4
Molecular Weight	~782.6 g/mol
Synonyms	Acid Black 210; C.I. 28440; Tetrasodium 1,3,5-Naphthalenetrisulfonate-7-[[4-[[4-[(sulfomethyl)amino]phenyl]azo]phenyl]azo]; 7-[[4-[[4-[(Sulfomethyl)amino]phenyl]azo]phenyl]azo]-1,3,5-naphthalenetrisulfonic acid tetrasodium salt; Direct Black 22 (related); Azo Dye Intermediate 68400-39-5
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 7-[[4-[[4-[(Sulphonatomethyl)Amino]Phenyl]Azo]Phenyl]Azo]Naphthalene-1,3,5-Trisulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications, including identity confirmation, assay, and impurity profiling. Certificates of Analysis (COA) documenting all test results are provided with every shipment 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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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