Description

Tetrasodium Hydrogen 7-Hydroxy-8-[[4-[(3-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate is a high-purity, water-soluble azo dye intermediate characterized by its phosphonated and sulphonated structure, which imparts excellent chelating properties and water solubility. This compound is critical for industrial manufacturers requiring precise colorant synthesis and metal ion control in process streams. It is primarily utilized by producers of specialized dyes, pigments, and functional additives for the textile, paper, and detergent industries.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-performance reactive dyes for cotton and cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics where color fastness and stability are required.
• Detergent and Cleaning Formulations: Acts as a functional additive and colorant in industrial and institutional cleaning products.
• Paper Coloring Agent: Employed in the dyeing process for specialty papers and packaging materials.
• Research & Development: Serves as a standard or precursor in chemical research for developing new chromophores and functional molecules.
• Metal Complex Dye Synthesis: Utilized in the preparation of metal-complex dyes due to its phosphonate groups which act as strong chelating sites.

Basic Information

Product Name	Tetrasodium Hydrogen 7-Hydroxy-8-[[4-[(3-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate
CAS No.	84051-89-8
Molecular Formula	C22H12N4Na4O16P1S3
Molecular Weight	Contact for details
Synonyms	7-Hydroxy-8-{[4-(3-phosphonophenyl)diazenyl]-2-sulfophenyl}diazenyl]naphthalene-1,3-disulfonic acid tetrasodium salt; Phosphonated Azo Dye Intermediate; CI Reactive Dye Intermediate; Tetrasodium 7-hydroxy-8-[[4-[(3-phosphonatophenyl)azo]-2-sulfonatophenyl]azo]naphthalene-1,3-disulfonate; Azo dye containing phosphonate group; Water-soluble phosphonated azo compound; Reactive dye precursor
EINECS	Contact for details

Quality Control

Our production of Tetrasodium Hydrogen 7-Hydroxy-8-[[4-[(3-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for industrial applications. Each lot is analyzed via advanced chromatographic and spectroscopic methods, with Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and heavy metal content available for every shipment. We are committed to meeting the specific quality standards required by our global clientele in the chemical manufacturing sector.

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). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed when not in use to minimize exposure to atmospheric moisture and light, which can affect product stability and performance.

Specification

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

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