Description

3-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-1-Naphthyl]Azo]Salicylic Acid, Sodium 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 synthesis and chemical analysis. It is primarily required by manufacturers in the dyes and pigments, analytical chemistry, and research and development sectors for producing precise hues and as a reagent in spectrophotometric determinations.

Application

• Dye and Pigment Manufacturing: As a key intermediate for synthesizing high-value azo dyes, particularly for textiles, inks, and specialty coatings.
• Analytical Reagent: Used in laboratory settings as a complexometric indicator or reagent in spectrophotometric analysis for metal ion detection.
• Research & Development: Serves as a building block in organic synthesis for developing new chromophores and functional materials.
• Biological Staining: Potential application in histological stains due to its specific binding affinity.
• Chemical Sensor Development: Utilized in the research of colorimetric sensors for environmental or biochemical monitoring.

Basic Information

Item	Details
Product Name	3-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-1-Naphthyl]Azo]Salicylic Acid, Sodium Salt
CAS No.	83221-54-9
Molecular Formula	C27H18N5NaO7S
Molecular Weight	603.52 g/mol
Synonyms	Acid Red 404; Mordant Red 19; C.I. 18135; 3-[(4-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-1-naphthyl)azo]salicylic acid sodium salt; Sodium 3-[(4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-1-naphthyl)azo]salicylate; 7-Amino-1-hydroxy-3-sulfo-2-naphthalene azo compound; Salicylic acid, 3-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-1-naphthyl]azo]-, monosodium salt
EINECS	Contact for details

Quality Control

Our production of 3-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-1-Naphthyl]Azo]Salicylic Acid, Sodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and elemental analysis. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to support your quality assurance processes.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect purity and performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear, complete solution

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