Description

1,3,6-Naphthalenetrisulfonic Acid, 7-[[4-(Acetylamino)Phenyl]Azo]-8-Hydroxy-, Trisodium Salt is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and ability to form stable complexes with metal ions, making it a critical component in specialized colorant systems. It is primarily sought by manufacturers in the dye and pigment, textile, and analytical chemistry industries for producing vibrant colors and as a reagent in specific detection methods.

Application

• As a key azo dye intermediate for the synthesis of acid dyes and direct dyes used in textile coloring.
• In the formulation of specialized pigments and inks requiring high color strength and stability.
• As a complexometric indicator or reagent in analytical chemistry for metal ion detection and titration.
• In research and development laboratories for studying azo coupling reactions and chromophore behavior.
• Potential use in the preparation of functional dyes for non-textile applications, such as in paper or leather.
• As a standard or reference material for quality control in dye manufacturing processes.

Basic Information

Product Name	1,3,6-Naphthalenetrisulfonic Acid, 7-[[4-(Acetylamino)Phenyl]Azo]-8-Hydroxy-, Trisodium Salt
CAS No.	74499-56-2
Molecular Formula	C20H13N3Na3O10S3
Molecular Weight	620.47 g/mol
Synonyms	7-[(4-Acetamidophenyl)azo]-8-hydroxy-1,3,6-naphthalenetrisulfonic acid trisodium salt; Acid Black 210; C.I. 28440; Trisodium 7-[(4-acetamidophenyl)azo]-8-hydroxynaphthalene-1,3,6-trisulphonate; 8-Hydroxy-7-[(4-acetamidophenyl)azo]-1,3,6-naphthalenetrisulfonic acid trisodium salt; Naphthalenetrisulfonic acid, 7-[(4-acetamidophenyl)azo]-8-hydroxy-, trisodium salt
EINECS	Contact for details

Quality Control

Our production of 1,3,6-Naphthalenetrisulfonic Acid, 7-[[4-(Acetylamino)Phenyl]Azo]-8-Hydroxy-, Trisodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity, strength, and impurity profiles. Certificates of Analysis (COA) documenting all critical specifications are provided to guarantee the material meets your technical requirements.

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 to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black 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.