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1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals

Catalog No. AAA1747503
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1-(2-Pyridylazo)-2-naphthol is widely used as an indicator for complexometry. It is used as a reagent for the extraction and spectrophotometric determination (for colorimetric analysis) of many transition metal elements like arsenic, chromium, cobalt, copper, cadmium, manganese, zinc and zirconium. It is also used for the analysis of uranium and thorium in solutions.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
1-(2-Pyridylazo)-2-naphthol is widely used as an indicator for complexometry. It is used as a reagent for the extraction and spectrophotometric determination (for colorimetric analysis) of many transition metal elements like arsenic, chromium, cobalt, copper, cadmium, manganese, zinc and zirconium. It is also used for the analysis of uranium and thorium in solutions.

Solubility
Insoluble in water.

Notes
Incompatible with strong bases and strong oxidizing agents.

Chemical Identifiers

CAS

85-85-8

Molecular Formula

C15H11N3O

Molecular Weight (g/mol)

249.273

MDL Number

MFCD00004071

InChI Key

RAXUMGMWXZYADR-OBGWFSINSA-N

Synonym

1-2-pyridylazo-2-naphthol, unii-095b53y3xv, pan indicator, 2-naphthalenol, 1-2-pyridinylazo, 1e-1-pyridin-2-ylhydrazinylidene naphthalen-2-one, 1-2-pyridylazo-2-hydroxynaphthalene, pan van, 1-2-pyridyldiazenyl naphthalen-2-ol, 1-pyridin-2-azo-2-naphthol, 2-naphthalenol, 1-2-2-pyridinyl diazenyl

PubChem CID

5376264

IUPAC Name

(1E)-1-(pyridin-2-ylhydrazinylidene)naphthalen-2-one

SMILES

C1=CC=C2C(=C1)C=CC(=O)C2=NNC3=CC=CC=N3

Specifications

Melting Point

138°C to 141°C

Quantity

1 g

Beilstein

206390

Solubility Information

Insoluble in water.

Formula Weight

249.27

Percent Purity

98%

Chemical Name or Material

1-(2-Pyridylazo)-2-naphthol

Hazard Category

H315-H319-H335

Hazard Statement

GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.

Precautionary Statement

P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P362-P501c

EINECSNumber

201-637-9

TSCA

Yes

Recommended Storage

Ambient temperatures
SDS

RUO – Research Use Only

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