1-(2-Pyridylazo)-2-naphthol, 98%

Description

CAS: 85-85-8 | C15H11N3O | 249.273 g/mol

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.

Specifications

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

• Melting Point: 138°C to 141°C
• Quantity: 5 g
• Beilstein: 206390
• Solubility Information: Insoluble in water.
• Formula Weight: 249.27
• Percent Purity: 98%
• Chemical Name or Material: 1-(2-Pyridylazo)-2-naphthol

Safety and Handling

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