Description

4,5-Dihydroxy-3-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid CAS NO 74385-48-1 is a high-purity, specialized azo dye intermediate characterized by its complex aromatic structure containing tetrazole and sulfonic acid groups. This compound is valued for its ability to impart specific chromophoric properties and act as a versatile coupling agent in advanced synthetic chemistry. It is primarily sought after by manufacturers in the analytical reagent, specialty dye, and pharmaceutical intermediate sectors for producing high-performance colorants and complex organic molecules.

Application

• Analytical Chemistry Reagent: Used as a sensitive chromogenic agent and complexometric indicator in spectrophotometric analysis for metal ion detection.
• Specialty Dye Synthesis: Serves as a key intermediate for manufacturing high-value azo dyes and pigments with specific light-fastness and color properties.
• Pharmaceutical Intermediate: Employed in the research and development of novel active pharmaceutical ingredients (APIs) and diagnostic agents.
• Biochemical Staining: Potential application in histological and cytological staining procedures due to its chromogenic structure.
• Chemical Sensor Development: Utilized in the fabrication of optical and electrochemical sensors for analytical detection systems.
• Ligand in Coordination Chemistry: Acts as a polydentate ligand for forming complexes with various metal ions in research applications.

Basic Information

Product Name	4,5-Dihydroxy-3-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	74385-48-1
Molecular Formula	C11H7N7O8S2
Molecular Weight	429.34 g/mol
Synonyms	3-(1H-Tetrazol-5-ylazo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid; 4,5-Dihydroxy-3-(2H-tetrazol-5-ylazo)naphthalene-2,7-disulfonic acid; 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(1H-tetrazol-5-ylazo)-; Tetrazolylazo R salt (analogous); Azo tetrazole naphthalene disulfonate; Chromotropic acid tetrazole azo derivative; C.I. 14645 (related class)
EINECS	Contact for details

Quality Control

Our production of 4,5-Dihydroxy-3-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid adheres to a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
Solubility	Soluble in water, alkaline solutions

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