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3147-14-6 - Calmagite, indicator grade - 3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)-1-naphthalenesulfonic acid - B21482 - Alfa Aesar

B21482 Calmagite, indicator grade

CAS Number
3147-14-6
Synonyms
3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)-1-naphthalenesulfonic acid

Size Price ($) Quantity Availability
5g 22.60
25g 76.00
100g 232.00
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Calmagite, indicator grade

MDL
MFCD00011656
EINECS
221-563-0

Chemical Properties

Formula
C17H14N2O5S
Formula Weight
358.37
Melting point
>330°
Solubility
Soluble in water.

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.

Notes

Store in cool place. Incompatible with strong oxidizing agents.

Literature 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.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280a-P305+P351+P338-P304+P340-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,1718
Beilstein
708596
Harmonized Tariff Code
2927.00
TSCA
Yes

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