CALMAGITE Property

Melting point:

330 °C (lit.)

Density 

0.989

storage temp. 

Store at RT.

solubility 

Solubility Soluble in water, ethanol

pka

8.1(at 25℃)

form 

Powder

color 

Purple

PH Range

Red (7.1) to blue (9.1)

Odor

Phenolic odor

Water Solubility 

Soluble in water.

λmax

610nm

Merck 

14,1718

BRN 

708596

Stability:

Stable. Incompatible with strong oxidizing agents.

Major Application

Nanoparticles, cleaning microelectronic substrates, sensors, photographic materials, recording materials, water hardness measurement, indicator for calcium and magnesium, determination of vanadium, medical component, measuring magnesium in biological fluids, diagnosis of diseases caused by elemental imbalance, treatment of thrombocytopenia, Kurine analysis test strip

InChIKey

VBRNLOQCBCPPHL-VHEBQXMUSA-N

EPA Substance Registry System

1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-5-methylphenyl)azo]- (3147-14-6)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29270000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

CALMAGITE Chemical Properties,Usage,Production

Chemical Properties

dark brown crystalline powder

Uses

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.

Uses

Used for the determination of magnesium in biological materials.

Uses

As indicator in titration of Ca or Mg with EDTA.

Purification Methods

A crude dye is extracted with anhydrous diethyl ether and forms red crystals from Me2CO. It gives a red colour in H2O at pH 7—9 and a blue colour at pH 9—11 which turns red on addition of Ca2+ or Mg2+ ions. [Lindstrom & Diehl Anal Chem 32 1123 1960]. Complexes with Ca, Mg and Th.