Thermo Scientific Chemicals Methyl Orange, pure, indicator

Description

CAS: 547-58-0 | C14H14N3NaO3S | 327.334 g/mol

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

Indicator

Specifications

Chemical Identifiers

• CAS: 547-58-0
• Molecular Formula: C14H14N3NaO3S
• Molecular Weight (g/mol): 327.334
• MDL Number: MFCD00007502
• InChI Key: STZCRXQWRGQSJD-UHFFFAOYSA-M
• Synonym: 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid, sodium salt, Acid Orange 52, C.I. 13025, MO, Helianthise
• PubChem CID: 23673835
• IUPAC Name: sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate
• SMILES: CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+]

• Melting Point: >300.0°C
• Beilstein: 16, 331
• Merck Index: 15, 6178
• Solubility Information: Solubility in water: soluble in hot water. Other solubilities: practically insoluble in alcohol
• Infrared Spectrum: Authentic
• Lambda Max: 461 to 469nm (in 0.01N NaOH)
• Formula Weight: 327.32
• Grade: Pure
• Packaging: Glass bottle
• Visual Transition Interval: from pH 3.2 (pink or red)to pH 4.4 (yellow-orange)
• Color: Orange
• Quantity: 100 g
• Physical Form: Fine Crystalline Powder
• Chemical Name or Material: Methyl Orange

Safety and Handling

Hazard Category	Danger
Hazard Statement	GHS H Statement: Toxic if swallowed.
Precautionary Statement	GHS P Statement: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. Wash face, hands and any exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
EINECSNumber	208-925-3
RTECSNumber	DB6327000
TSCA	TSCA

SDS

RUO – Research Use Only