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C204

Supelco

Calmagite

metal indicator

Synonym(s):

1-(1-Hydroxy-4-methyl-2-phenylazo)-2-naphthol-4-sulfonic acid, 3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid

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About This Item

Linear Formula:
HOC10H5[N=NC6H3(OH)CH3]SO3H
CAS Number:
3147-14-6
Molecular Weight:
358.37
Beilstein:
708596
EC Number:
221-563-0
MDL number:
MFCD00011656
UNSPSC Code:
12352204
PubChem Substance ID:
24892461
NACRES:
NA.83

product name

Calmagite, indicator grade

grade

indicator grade

form

powder and chunks

technique(s)

titration: suitable

mp

330 °C (lit.)

λmax

602 nm

SMILES string

Cc1ccc(O)c(c1)N=Nc2c(O)cc(c3ccccc23)S(O)(=O)=O

InChI

1S/C17H14N2O5S/c1-10-6-7-14(20)13(8-10)18-19-17-12-5-3-2-4-11(12)16(9-15(17)21)25(22,23)24/h2-9,20-21H,1H3,(H,22,23,24)

InChI key

VBRNLOQCBCPPHL-UHFFFAOYSA-N

Gene Information

human ... MPL(4352)

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Application

Used for the determination of magnesium in biological materials.
Used as an indicator in the titration of calcium or magnesium with EDTA.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Total Mg2+ measured in serum and urine in the Technicon RA 1000 random access analyzer by use of modified manual calmagite procedure.
E P Diamandis et al.
Clinical chemistry, 30(7), 1262-1262 (1984-07-01)
Tippu S Sheriff et al.
Dalton transactions (Cambridge, England : 2003), (44)(44), 5119-5122 (2007-11-07)
Hydrogen peroxide (H(2)O(2)) generated from the manganese(II) catalysed reduction of dioxygen has been shown to efficiently oxidize Calmagite (3-hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid) in aqueous solution at pH 8.0 and 20 +/- 1 degrees C with de-protonated Tiron (1,2-dihydroxybenzene-3,5-disulfonate, disodium salt) acting as
Colorimetric measurement of serum magnesium with an IL micro centrifugal analyzer.
P Datta et al.
Clinica chimica acta; international journal of clinical chemistry, 151(1), 85-90 (1985-09-16)
Avoiding serum matrix effect in calmagite compleximetric measurements of magnesium.
N J Frandsen et al.
Clinical chemistry, 33(5), 719-719 (1987-05-01)
R J Liedtke et al.
Clinical chemistry, 30(11), 1801-1804 (1984-11-01)
We describe an automated method for magnesium assay, for use with the Cobas-Bio centrifugal analyzer. Magnesium is reacted with calmagite, a dye, and the absorbance of the magnesium-dye complex at 520 nm is measured. EDTA is then added to break
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