Description

Ammonium Trisodium 7-Hydroxy-8-[[4-[(m-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate is a high-purity, water-soluble azo dye intermediate characterized by its complex molecular structure containing phosphonate and sulphonate groups. This compound matters for its role in synthesizing specialized dyes and pigments with enhanced properties like metal complexation and improved fastness. Industrial manufacturers in the textile, ink, and specialty chemical sectors require this precise intermediate to develop advanced colorants for demanding applications.

Application

• Textile Dye Intermediate: A key precursor for manufacturing metal-complex dyes used on wool, nylon, and silk, offering excellent wash and light fastness.
• Specialty Ink Formulation: Used in the production of high-performance inks for security printing, packaging, and digital textiles.
• Analytical Reagent: Serves as a colorimetric reagent or indicator in analytical chemistry for the detection of specific metal ions.
• Research & Development: Employed in academic and industrial R&D for synthesizing novel functional dyes and studying azo dye chemistry.
• Pigment Synthesis: Acts as a starting material for creating lake pigments and other insoluble colorants with specific tonal qualities.
• Photographic Industry: Potential use in light-sensitive layers or as a spectral sensitizer in certain photographic processes.

Basic Information

Item	Details
Product Name	Ammonium Trisodium 7-Hydroxy-8-[[4-[(m-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate
CAS No.	70729-64-5
Molecular Formula	C22H14N4Na3O14PS3 · xNH3
Molecular Weight	Contact for details
Synonyms	7-Hydroxy-8-({4-[(3-phosphonophenyl)diazenyl]-2-sulfophenyl}diazenyl)naphthalene-1,3-disulfonic acid, ammonium trisodium salt; Azo dye intermediate CAS 70729-64-5; Trisodium ammonium naphthalene disulphonate azo dye; Phosphonated azo dye intermediate; Reactive dye precursor; Acid Black 210 intermediate (related); C.I. 30027 (related); Mordant dye intermediate
EINECS	Contact for details

Quality Control

Our production of Ammonium Trisodium 7-Hydroxy-8-[[4-[(m-Phosphonatophenyl)Azo]-2-Sulphonatophenyl]Azo]Naphthalene-1,3-Disulphonate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with agreed specifications. Certificates of Analysis (COA) documenting all critical parameters are provided and 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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Water Solubility	Freely soluble

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