Description

Azomethine-H Monosodium Salt Hydrate is a high-purity, water-soluble organic reagent primarily used as a highly selective chromogenic agent for the spectrophotometric determination of boron. Its core value proposition lies in its ability to form a stable, colored complex with boron, enabling precise and sensitive analysis in complex matrices. This compound is essential for quality control and research laboratories in industries such as agriculture, glass manufacturing, semiconductors, and environmental monitoring, where accurate boron quantification is critical.

Application

• Spectrophotometric Boron Analysis: Primary reagent for the colorimetric determination of boron in water, soils, fertilizers, and plant tissues.
• High-Purity Materials Manufacturing: Quality control testing for boron content in semiconductor-grade silicon, optical glasses, and ceramics.
• Agricultural Science: Analysis of boron levels in irrigation water, soils, and crops to manage micronutrient deficiency or toxicity.
• Environmental Monitoring: Detection and quantification of trace boron in wastewater, drinking water, and industrial effluents.
• Geochemical Research: Assaying boron in geological samples, including rocks, minerals, and brines.
• Pharmaceutical & Cosmetic QC: Potential use in testing raw materials or finished products for trace elemental impurities.

Basic Information

Product Name	Azomethine-H Monosodium Salt Hydrate
CAS No.	304655-82-1
Molecular Formula	C17H12NNaO8S2 · xH2O
Molecular Weight	421.40 (Anhydrous)
Synonyms	Azomethine-H Sodium Salt; 4-Hydroxy-5-(salicylideneamino)-2,7-naphthalenedisulfonic Acid Monosodium Salt; H-Resorcinolazomethine-H Disulfonic Acid Sodium Salt; Boron Color Reagent; Azomethine H Na Salt; Chromogenic Agent for Boron; 2,4-Dihydroxybenzylideneamino-2-hydroxyphenyl-5-sulfonic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our Azomethine-H Monosodium Salt Hydrate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with reagent-grade specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, assay, and impurity profiles is provided with every shipment to guarantee reliable and reproducible results in your analytical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent absorption of atmospheric moisture, which may affect performance.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 5.0%
Absorbance Ratio (Specific Wavelengths)	Meets internal standard for chromogenic performance
Boron Complex Molar Absorptivity	≥ 1.5 x 104 L·mol-1·cm-1 (Typical)
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, yellow solution

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