15 Chromogen/Metal Indicator

Azomethine H

Azomethine H

Metal Indicator

  • Product code
    A015  Azomethine H
  • CAS No.
  • Chemical name
    8-Hydroxy-1-(salicylideneamino)-3,6-naphthalenedisulfonic acid, sodium salt
  • MW
Unit size Price Item Code
5 g A015-10
25 g A015-12

Chemical Structure

Product Description

Azomethine H is a colorimetric reagent for boron detection; it forms an orange complex with boron in aqueous solution. The molar absorptivity of this complex is 1.01×104 at 415 nm. The detection range of boron in sample solutions is 1-6 μg per ml. To detect boron in plant samples, EDTA is used to mask copper, iron, and aluminum ions. Azomethine H is used to detect microgram levels of boron in glass and steel samples.


Open References

1) R. Capelle, "Microdosage Colorimetrique Du Bore En Milieu Aqueux, Au Moyen De Reactifs a Groupement Azoique Ou Imine Derives Des Acides H Et K", Anal. Chim. Acta, 1961, 24, 555.
2) T. M. Shanina, N. E. Gelman and V. S. Mikhailovskaya, "Quantitative Analysis of Heteroorganic Compounds. Spectrophotometric Microdetermination of Boron", Z. Anal. Khim., 1967, 22, 782.
3) W. D. Basson, R. G. Bohmer and D. A. Stanton, "An Automated Procedure for the Determination of Boron in Plant Tissue", Analyst, 1969, 94, 1135.
4)  R. A. Edwards, "Automatic Determination of Boron(0.10-10.0 mg/l)in Raw and Waste Waters", Analyst, 1980, 105, 139.

Handling and storage condition

Appearance: Yellowish orange to yellowish brown powder or crystalline powder
Solubility in Ascorbic acid solution: To pass test (clear, yellowish orange)
Absorbance: ≧ 0.900 (around 413 nm)
Sodium (Na): 4.0~6.0%
IR spectrum: Authentic
Handling and storage condition
Ambient temperature

Product Classification

Product Classification

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