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Sigma-Aldrich

4-(2-Pyridylazo)resorcinol monosodium salt hydrate

Synonym(s):

PAR monosodium salt hydrate

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About This Item

Empirical Formula (Hill Notation):
C11H8N3NaO2 · xH2O
CAS Number:
16593-81-0
Molecular Weight:
237.19 (anhydrous basis)
Beilstein:
3825637
MDL number:
MFCD00150712
UNSPSC Code:
12171500
PubChem Substance ID:
24850727
NACRES:
NA.47

Assay

≥97.5% (HPLC)

Quality Level

200

form

powder or crystals

λmax

411 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[H]O[H].Oc1cc([O-])ccc1\N=N\c2ccccn2

InChI

1S/C11H9N3O2.Na.H2O/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11;;/h1-7,15-16H;;1H2/q;+1;/p-1/b14-13+;;

InChI key

KMHFHNVYQMFVAN-QDBORUFSSA-M

Related Categories

General description

4-(2-Pyridylazo)resorcinol monosodium salt is a chromophoric indicator and chromogenic chelator employed for the spectrophotometric determination of several metal ions.

Application

4-(2-Pyridylazo)resorcinol monosodium salt hydrate has been used in the preparation of titanium reagent for the spectrometric measurement of hydrogen peroxide (H2O2) and superoxide anion (O2•-). It is also suitable to measure the concentration of Zn2+, Zinc transition metal ions.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Analytical Chemistry, 57, 625-625 (1985)

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