Azomethine H

Storage: Ambient Temperature

Shipping Condition: Ambient Temperature

Chemical Name: 8-Hydroxy-1-(salicylideneamino)-3,6-naphthalenedisulfonic acid, disodium salt

CAS Number: 32266-60-7, 5941-07-1: Na, H2O

Appearance: yellowish orange or yellowish brown crystalline powder

Absorbance(6ppm boron solution): >0.90 (413 nm)

Sulfated ash: <36 %

Solubility: 0.9 g/30 ml, 6.7% ascorbic acid solution100 ml water

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 1.01x104 at 415 nm. The detection range of boron in sample solutions is 1-6礸/ml. To detect boron in plant samples, EDTA is used to mask cupper, iron, and aluminum ions. Azomethine H is used to detect microgram levels of boron in glass and steel samples.