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323209

4-(2-Pyridylazo)resorcinol

Name: 4-(2-Pyridylazo)resorcinol
Brand: SIAL

96%

Synonym(s):

PAR

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About This Item

Empirical Formula (Hill Notation):

C₁₁H₉N₃O₂

CAS Number:

1141-59-9

Molecular Weight:

215.21

UNSPSC Code:

12171500

NACRES:

NA.47

PubChem Substance ID:

24859228

EC Number:

214-528-6

Beilstein/REAXYS Number:

184665

MDL number:

MFCD00006256

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Properties

Quality Segment

200

assay

96%

form

powder

composition

Carbon: 58.6-64.2%

Nitrogen: 18.6-20.4%

technique(s)

titration: suitable

color

brown-red

mp

192-202 °C (lit.)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc(\N=N\c2ccccn2)c(O)c1

InChI

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

InChI key

RJNYNDHYSJRRDW-BUHFOSPRSA-N

Description

General description

4-(2-Pyridylazo)resorcinol (PAR) is a monosodium salt(1), dibasic acid that forms the protonated complexes with most metal ions.

Application

4-(2-Pyridylazo)resorcinol (PAR) serves as a metallochromic indicator and is suitable as a chromogenic agent for the quantitative determination of over 50 elements.

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Storage Class

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

dust mask type N95 (US), Eyeshields, Gloves

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