Description

3-Hydroxy-4-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid is a high-purity, specialized organic intermediate featuring a unique azo-tetrazole chromophore. This compound is valued for its strong chelating properties and its ability to form stable, colored complexes with various metal ions, making it a critical component in analytical and industrial chemistry. It is primarily sought after by manufacturers and R&D laboratories in the chemical synthesis, analytical reagent, and specialty dye sectors for developing sensitive detection systems and functional materials.

Application

• Analytical Reagent: Used as a sensitive colorimetric and spectrophotometric reagent for the detection and quantification of metal ions such as copper, nickel, and cobalt in environmental and industrial samples.
• Chelating Agent: Serves as an effective ligand in the formulation of metal-chelating solutions for water treatment and metal recovery processes.
• Chemical Synthesis Intermediate: A key building block for synthesizing more complex azo dyes, pigments, and functional organic compounds with specific light-absorption properties.
• Research & Development: Employed in academic and industrial R&D for developing novel sensor materials, catalytic systems, and advanced polymeric dyes.
• Photographic Industry: Can be utilized in the formulation of specialized light-sensitive layers and photographic chemicals.
• Textile Auxiliary: Potential use as an intermediate for producing dyes with enhanced fastness properties for synthetic fibers.

Basic Information

Product Name	3-Hydroxy-4-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	35332-95-7
Molecular Formula	C11H7N7O7S2
Molecular Weight	413.35 g/mol
Synonyms	5-(2-Hydroxy-3,6-disulfo-1-naphthylazo)tetrazole; 1H-Tetrazol-5-ol, 5-[(2-hydroxy-3,6-disulfo-1-naphthalenyl)azo]-; 3-Hydroxy-4-(1H-tetrazol-5-ylazo)naphthalene-2,7-disulfonic acid; Azo tetrazole naphthalene disulfonic acid; C.I. 18960; Acid Red 317; Tetrazolylazo Naphthol Disulfonic Acid; 35332-95-7
EINECS	Contact for details

Quality Control

Our 3-Hydroxy-4-(1H-Tetrazol-5-Ylazo)-2,7-Naphthalenedisulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive applications. Certificates of Analysis (COA) documenting batch-specific results are 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Soluble, clear solution

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