Calmagite excellent quality manufacturer, exporter and supplier. Calmagite is a complexometric indicator used in analytical chemistry to identify the presence of metal ions in solution. As with other metal ion indicators calmagite will change color when it is bound to an ion. Calmagite will be wine red when it is bound to a metal ion and may be blue, red, or orange when it is not bound to a metal ion.

Technical Specifications:
C.A.S. No. 3147-14-6
M.F. C17H14N2O5S
M.W. 358.37gm/mole


Solubility 0.1% (Dist. Water) Clear solution
Absorption maximum (pH 10.0 in Ammonia buffer+2ml of 0.05M E.D.T.A. Solution) ?max 600-610nm
Absorptivity (A1% 1cm at ?max, at pH 10.0 in Ammonia buffer +2ml of 0.05M E.D.T.A. solution on dried substance) >300
Loss On Drying (110°C) <10%

Note: This article uses material from the