4-(4-Nitrophenylazo)resorcinol, 90+%

Catalog No.	Quantity
AAA1223236	500 g
AAA1223214	25 g
AAA1223222	100 g

Catalog No. AAA1223236 Supplier Thermo Scientific Chemicals Supplier No. A1223236

Description

CAS: 74-39-5 | C12H9N3O4 | 259.22 g/mol

It is a derivitized resorcinol dye compound with an absorption maximum of 432 nm. Used as a pH indicator.

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
It is a derivitized resorcinol dye compound with an absorption maximum of 432 nm. Used as a pH indicator.

Solubility
Soluble in dilute sodium hydroxide. Insoluble in water.

Notes
Store in cool, dry place in a tightly sealed container. Store away from oxidizing agent.

Specifications

Chemical Identifiers

• CAS: 74-39-5
• Molecular Formula: C12H9N3O4
• Molecular Weight (g/mol): 259.22
• MDL Number: MFCD00007310
• InChI Key: BIFFKKLAAIGZBV-UHFFFAOYSA-N
• Synonym: p-nitrophenylazoresorcinol, p-diazoviolet, p-nitrobenzeneazoresorcinol, magneson i, magnezon i, 4-p-nitrophenylazo resorcinol, p-diazviolet, 2,4-dihydroxy-4'-nitroazobenzene, magneson, 4-4-nitrophenylazo resorcinol
• PubChem CID: 5717413
• IUPAC Name: (4E)-3-hydroxy-4-[(4-nitrophenyl)hydrazinylidene]cyclohexa-2,5-dien-1-one
• SMILES: OC1=CC(=O)C=CC1=NNC1=CC=C(C=C1)[N+]([O-])=O

• Melting Point: ∼185°C (decomposition)
• Quantity: 500 g
• Beilstein: 674709
• Merck Index: 14,5695
• Solubility Information: Soluble in dilute sodium hydroxide. Insoluble in water.
• Formula Weight: 259.22
• Percent Purity: 95%
• Chemical Name or Material: 4- (4-Nitrophenylazo)resorcinol

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	200-808-5
RTECSNumber	VH2810000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only