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Thermo Scientific Chemicals
Calmagite, indicator grade
CAS: 3147-14-6 | C17H14N2O5S | 358.368 g/mol
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化學識別
CAS3147-14-6
IUPAC Name4-[2-(2-hydroxy-5-methylphenyl)hydrazin-1-ylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonic acid
Molecular FormulaC17H14N2O5S
InChI KeyASFVMSDYPYMUFL-UHFFFAOYSA-N
SMILESCC1=CC(NN=C2C(=O)C=C(C3=CC=CC=C23)S(O)(=O)=O)=C(O)C=C1
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規格
規格表
規格表Appearance (Color)Brown to black
Loss on Drying< 10.0%
lambda-max (UV-Vis)600 - 615nm (pH 10 buffer)
Solution Test0.1% methanol: clear
Formpowder
Calmagite is widely used in analytical chemistry as an indicator in the titration of calcium or magnesium with ethylenediaminetetraacetic acid (EDTA). It is also useful in the determination of magnesium in biological materials.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Applications
Calmagite is widely used in analytical chemistry as an indicator in the titration of calcium or magnesium with ethylenediaminetetraacetic acid (EDTA). It is also useful in the determination of magnesium in biological materials.
Solubility
Soluble in water.
Notes
Store in cool place. Incompatible with strong oxidizing agents.
Calmagite is widely used in analytical chemistry as an indicator in the titration of calcium or magnesium with ethylenediaminetetraacetic acid (EDTA). It is also useful in the determination of magnesium in biological materials.
Solubility
Soluble in water.
Notes
Store in cool place. Incompatible with strong oxidizing agents.
RUO – Research Use Only
General References:
- Indicator for complexometric determination of lanthanides: Anal. Chim. Acta, 106, 401 (1979).
- Elci, A.; Kabakc, E.; Elci, L. Solid-Phase Extractive Preconcentration of Trace Copper as its Calmagite Anionic Chelate using a Polyaniline Column for Flame Atomic Absorption Spectrometric Determination. Anal. Lett. 2015, 48 (4), 632-646.
- Garcia, Z. N. C.; Delgado, P. G. N.; Zavala, J. G. R. Conformational analysis on protonation and deprotonation of calmagite in protic solvents and its reactivity through Fukui function. Dyes Pigm. 2015, 121, 188-198.