Thermo Scientific Chemicals Methyl Yellow, indicator

Description

Methyl Yellow used as a pH indicator. It is an acid-base indicator that changes color from below pH 2.9 red to above pH 4.0 yellow and vice versa. Typical use is in the titration of a weak base with a strong acid.

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
Methyl Yellow used as a pH indicator. It is an acid-base indicator that changes color from below pH 2.9 red to above pH 4.0 yellow and vice versa. Typical use is in the titration of a weak base with a strong acid.

Solubility
Insoluble in water. Soluble in alcohol.

Notes
Transition interval: pH 2.9 (red) to pH 4.0 (yellow)

Specifications

Chemical Identifiers

• CAS: 60-11-7
• Molecular Formula: C14H15N3
• Molecular Weight (g/mol): 225.30
• MDL Number: MFCD00008308
• InChI Key: JCYPECIVGRXBMO-UHFFFAOYSA-N
• Synonym: methyl yellow, dimethyl yellow, 4-dimethylamino azobenzene, 4-dimethylaminoazobenzene, solvent yellow 2, sudan yellow, fat yellow, p-dimethylaminoazobenzene, stear yellow jb, sudan yellow gg
• PubChem CID: 6053
• ChEBI: CHEBI:17903
• SMILES: CN(C)C1=CC=C(C=C1)N=NC1=CC=CC=C1

• Melting Point: 110°C to 112°C (decomposition)
• Odor: Odorless
• Quantity: 500 g
• UN Number: UN2811
• Beilstein: 746016
• Merck Index: 14,3229
• Solubility Information: Insoluble in water; Soluble in alcohol.
• IUPAC Name: N,N-dimethyl-4-(2-phenyldiazen-1-yl)aniline
• Formula Weight: 225.3
• Chemical Name or Material: Methyl Yellow, indicator

Safety and Handling

Hazard Category	H301-H350
Hazard Statement	GHS H Statement H301-H351 Toxic if swallowed. Suspected of causing cancer.
Precautionary Statement	P201-P202-P264b-P270-P281-P301+P310-P308+P313-P330-P501c
DOTInformation	Transport Hazard Class: 6.1; Packing Group: III; Proper Shipping Name: TOXIC SOLIDS, ORGANIC, N.O.S.
EINECSNumber	200-455-7
RTECSNumber	BX7350000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only