Description

Azomethine H is a high-purity analytical reagent and chemical intermediate. Its primary commercial value lies in its specific chelating properties, making it a critical component for precise colorimetric determination and metal ion analysis. This compound is essential for quality control laboratories, analytical service providers, and manufacturers in the chemical synthesis sector requiring reliable and sensitive detection reagents.

Application

• Colorimetric Reagent: Primarily used for the spectrophotometric determination of aluminum (Al³⁺) and beryllium (Be²⁺) ions in various sample matrices.
• Analytical Chemistry: Serves as a selective chelating agent in complexometric titrations and trace metal analysis in environmental, geological, and industrial samples.
• Pharmaceutical Analysis: Employed in the testing of raw materials and finished products for residual aluminum or other metal impurities.
• Water Treatment & Environmental Monitoring: Applied in the detection and quantification of aluminum levels in potable water, wastewater, and environmental monitoring programs.
• Research & Development: Used as a key reagent in academic and industrial R&D for developing new analytical methodologies and studying metal-ligand interactions.
• Quality Control (QC) Laboratories: A standard reagent for in-process testing and final product release in industries where metal content is a critical quality attribute.

Basic Information

Product Name	Azomethine H
CAS No.	32266-60-7
Molecular Formula	C₁₇H₁₄N₂O₈S₂
Molecular Weight	438.43 g/mol
Synonyms	Azomethine-H; 4-Hydroxy-5-[(2-hydroxy-3,5-disulfophenyl)azo]-2,7-naphthalenedisulfonic Acid Trisodium Salt; 2-Hydroxy-3,5-disulfo-1-[(8-hydroxy-3,6-disulfo-1-naphthyl)azo]benzene Trisodium Salt; Aluminon Related Dye; Aluminum Detection Reagent; Trisodium 5-[(E)-(3-carboxy-4-hydroxyphenyl)diazenyl]-4-hydroxy-6-[(E)-(8-hydroxy-3,6-disulfonato-1-naphthyl)diazenyl]naphthalene-2,7-disulfonate
EINECS	250-951-1

Quality Control

Our Azomethine H is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for analytical applications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, absorbance characteristics, and impurity profile.

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 use to prevent moisture absorption, which can affect performance and stability.

Specification

Item	Specification
Appearance	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Absorbance (Lambda max)	Conforms
Loss on Drying	≤ 5.0 %
Residue on Ignition (Sulfated Ash)	≤ 30.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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