Description

Azomethine H is a high-purity analytical reagent widely recognized for its role as a selective colorimetric reagent. Its primary commercial value lies in its ability to form stable, colored complexes with specific metal ions, making it indispensable for precise quantitative analysis. This compound is essential for industries and laboratories requiring accurate metal determination, particularly in environmental monitoring, pharmaceutical quality control, and metallurgical analysis.

Application

• Spectrophotometric Determination of Aluminum: Used as a key reagent for the sensitive and selective colorimetric assay of aluminum ions in various matrices.
• Water and Environmental Analysis: Employed in testing water samples for trace metal contamination, crucial for environmental compliance and safety.
• Pharmaceutical Quality Control: Applied in the analysis of raw materials and finished products where aluminum or other specific metal content must be monitored.
• Metallurgical and Alloy Testing: Utilized for the quantitative analysis of metal composition in alloys and ores.
• Research and Development: Serves as a fundamental tool in chemical research for developing new analytical methods involving complexometric reactions.
• Food and Beverage Industry: Potential use in monitoring mineral content or trace metal impurities in food-grade products.

Basic Information

Product Name	Azomethine H
CAS No.	5941-07-1
Molecular Formula	C17H14N2O8S2
Molecular Weight	438.43 g/mol
Synonyms	Azomethine-H; 4,5-Dihydroxy-3-[(E)-[(8-hydroxy-3,6-disulfo-2-naphthyl)methylidene]amino]benzene-1,2-disulfonic acid; 2-Hydroxy-5-sulfo-3-[(2-hydroxy-3,6-disulfo-1-naphthyl)methyleneamino]benzenesulfonic acid; Trisodium 8-[(E)-(2,3-dihydroxy-5-sulfonatobenzylidene)amino]-1-hydroxy-3,6-naphthalenedisulfonate; Aluminum reagent Azomethine H
EINECS	227-689-8

Quality Control

Our Azomethine H is manufactured under strict quality management systems to ensure batch-to-batch consistency and high analytical performance. Each lot undergoes rigorous testing, including purity assay by HPLC, identification by IR spectroscopy, and control of key impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment 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	Yellow to orange-brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Absorbance in Solution	Meets functional performance criteria
Heavy Metals (as Pb)	≤ 20 ppm

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