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Merck
CN

93257

Xylidyl blue I

p.a., for colorimetric det. of Mg, ≥95.0% (CHN)

Synonym(s):

4-Hydroxy-3-[2-hydroxy-3-(2,4-dimethylphenylaminocarbonyl)-1-naphthylazobenzenesulfonic acid sodium salt, Magonsulfonate

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About This Item

Linear Formula:
HOC6H3[N=NC10H5(OH)[CONHC6H3(CH3)2]]SO3Na
CAS Number:
14936-97-1
Molecular Weight:
513.50
EC Number:
239-012-8
UNSPSC Code:
12171500
MDL number:
MFCD00003890
Beilstein/REAXYS Number:
4107363

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InChI

1S/C25H21N3O6S.Na/c1-14-7-9-20(15(2)11-14)26-25(31)19-12-16-5-3-4-6-18(16)23(24(19)30)28-27-21-13-17(35(32,33)34)8-10-22(21)29;/h3-13,29-30H,1-2H3,(H,26,31)(H,32,33,34);/q;+1/p-1/b28-27+;

InChI key

LKSHJHJGLORTGD-RXQWRGDBSA-M

SMILES string

[Na+].Cc1ccc(NC(=O)c2cc3ccccc3c(\N=N\c4cc(ccc4O)S([O-])(=O)=O)c2O)c(C)c1

grade

p.a.

assay

≥95.0% (CHN)

quality

for colorimetric det. of Mg

technique(s)

UV/Vis spectroscopy: suitable, titration: suitable

impurities

<15% ash (as sulfate)

Other Notes

Colorimetric reagent for Mg, slightly soluble in water and alcohol and readily soluble in aqueous alkaline solution turning reddish violet in the presence of Mg at pH 9 (λmax=510 nm, Ε=49,000)

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C. K. Mann, J. H. Yoe
Analytical Chemistry, 28, 202-202 (1956)

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