Methyl Yellow

Description

Methyl Yellow · CAS 60-11-7 · C14H15N3. UNII A49L8E13FD. Melting Point: 114-117 °C; Melting Point: 232 °F; Melting Point: 117 °C.

Identification

CAS Registry Number	60-11-7
PubChem CID	6053
Molecular formula	C14H15N3
IUPAC name	N,N-dimethyl-4-phenyldiazenylaniline
UNII (FDA)	A49L8E13FD

Computed Descriptors

Molecular Weight	225.29
XLogP3	4.6
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	3
Exact Mass	225.126597491
Monoisotopic Mass	225.126597491
Topological Polar Surface Area	28
Heavy Atom Count	17
Formal Charge	0

Physical & Chemical Properties

Melting Point	114-117 °C
Melting Point	232 °F
Melting Point	117 °C
Melting Point	237 °F
Solubility	0.001%
Vapor Density	7.78
Vapor Pressure	3e-07 mmHg (est.) (NIOSH, 2024)
Vapor Pressure	0.0000003 [mmHg]
Vapor Pressure	0.0000003 mmHg (est.)
LogP	log Kow= 4.58

Physical description & handling notes

• 4-dimethylaminoazobenzene appears as yellow crystalline leaflets or an orange powder. (NTP, 1992)
• Yellow, leaf-shaped crystals; [NIOSH]
• YELLOW CRYSTALS.
• Yellow, leaf-shaped crystals.
• YELLOW CRYSTALLINE LEAFLETS
• Sublimes (NIOSH, 2024)

Regulatory Status

Regulatory & Food Contact	COLOUR: Food Additives OIL YELLOW GG NMRS 38/TRS 309-JECFA 8/24

GHS Hazard Classification

Reported hazard statements	H301 (100%), H351 (94.2%), H315, H341, H319, H335

Documented Uses

• 4-Dimethylaminoazobenzene was used as a dye for coloring polishes and other wax products, polystyrene, soap, and as a pH indicator.
• Used as a reagent for chemical analysis; Used in the past as a yellow hair dye in Scandinavian countries; [HSDB]
• See Carcinogens in 29CFR1910.1003 (Code of Federal Regulations)
• Pulp and Paper Processing [Category: Industry]
• Dressing Hair [Category: Other]
• FOR DETERMINATION OF FREE HYDROCHLORIC ACID IN GASTRIC JUICE; SPOT TEST IDENTIFICATION OF PEROXIDIZED FATS; PH INDICATOR (RED 2.9, YELLOW 4.0).

Synonyms

60-11-7; 4-(Dimethylamino)azobenzene; Solvent Yellow 2; 4-Dimethylaminoazobenzene; C.I. Solvent Yellow 2; Sudan Yellow GG; Sudan Yellow GGA; Resinol Yellow GR; N,N-dimethyl-4-(phenyldiazenyl)aniline; Fat Yellow; N,N-Dimethyl-4-aminoazobenzene; Stear Yellow JB; Somalia Yellow A; Fat Yellow A; Fat Yellow R; Sudan GG

Frequently Asked Questions

What are the CAS number and molecular formula of Methyl Yellow?

CAS 60-11-7; molecular formula C14H15N3; molecular weight — g/mol.

What other names is Methyl Yellow known by?

60-11-7, 4-(Dimethylamino)azobenzene, Solvent Yellow 2, 4-Dimethylaminoazobenzene, C.I. Solvent Yellow 2, Sudan Yellow GG.

What is the regulatory status of Methyl Yellow?

Documented regulatory listings: COLOUR: Food Additives; OIL YELLOW GG; NMRS 38/TRS 309-JECFA 8/24.

Is Methyl Yellow classified as hazardous?

Hazard statements reported: H301, H351, H315, H341, H319.

What are the key physical properties of Methyl Yellow?

Melting Point: 114-117 °C; Melting Point: 232 °F; Melting Point: 117 °C; Melting Point: 237 °F.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.