5-Amino-o-cresol

Description

5-Amino-o-cresol · CAS 2835-95-2 · C7H9NO. UNII UBB8XEB10B. Melting Point: 161 °C; Vapor Pressure: 0.00026 [mmHg]; Vapor Pressure: 2.6X10-4 mm Hg @ 25 °C /Estimated/.

Identification

CAS Registry Number	2835-95-2
PubChem CID	17818
Molecular formula	C7H9NO
IUPAC name	5-amino-2-methylphenol
UNII (FDA)	UBB8XEB10B

Computed Descriptors

Molecular Weight	123.15
XLogP3	1.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	123.068413911
Monoisotopic Mass	123.068413911
Topological Polar Surface Area	46.3
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Melting Point	161 °C
Vapor Pressure	0.00026 [mmHg]
Vapor Pressure	2.6X10-4 mm Hg @ 25 °C /Estimated/

Physical description & handling notes

• 3-amino-6-methylphenol is a brown powder. (NTP, 1992)
• Brown solid; [CAMEO] Slightly beige powder; [MSDSonline]
• Plates from water
• 320 to 347 °F (sublimes) (NTP, 1992)
• less than 1 mg/mL at 70 °F (NTP, 1992)
• In water, 2,427 mg/L @ 25 °C /Estimated/

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (4-Amino-2-Hydroxytoluene) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Hair dyeing

GHS Hazard Classification

Reported hazard statements	H315 (68.2%), H317 (72.6%), H319 (74.9%), H335 (74.3%), H400 (38%), H410 (37.4%), H411 (26.3%), H320

Documented Uses

• CIR ingredient: 4-Amino-2-Hydroxytoluene
• Used as a coupler in oxidative hair dyeing; [HSDB]
• Dressing Hair [Category: Other]
• Used almost exclusively in cosmetics as a coupler in oxidative hair dyeing.
• Information on 166 consumer products that contain 4-Amino-2-hydroxytoluene in the following categories is provided:
• Phenol, 5-amino-2-methyl-: ACTIVE

Synonyms

5-Amino-2-methylphenol; 5-Amino-o-cresol; 2835-95-2; 4-Amino-2-hydroxytoluene; 3-Hydroxy-4-methylaniline; Phenol, 5-amino-2-methyl-; 6-Methyl-3-aminophenol; 2-methyl-5-aminophenol; 4-Amino-2-hydroxy-1-methylbenzene; DTXSID9024489; UBB8XEB10B; DTXCID204489; 3-HYDROXY-P-TOLUIDINE; 1-methyl-2-hydroxy-4-aminobenzene; RefChem:913242; 220-618-6

Frequently Asked Questions

What are the CAS number and molecular formula of 5-Amino-o-cresol?

CAS 2835-95-2; molecular formula C7H9NO; molecular weight — g/mol.

What other names is 5-Amino-o-cresol known by?

5-Amino-2-methylphenol, 5-Amino-o-cresol, 2835-95-2, 4-Amino-2-hydroxytoluene, 3-Hydroxy-4-methylaniline, Phenol, 5-amino-2-methyl-.

What is the regulatory status of 5-Amino-o-cresol?

Documented regulatory listings: CIR / INCI: Cosmetic ingredients (4-Amino-2-Hydroxytoluene) -> CIR (Cosmetic Ingredient Review); CIR / INCI: Hair dyeing.

Is 5-Amino-o-cresol classified as hazardous?

Hazard statements reported: H315, H317, H319, H335, H400.

What are the key physical properties of 5-Amino-o-cresol?

Melting Point: 161 °C; Vapor Pressure: 0.00026 [mmHg]; Vapor Pressure: 2.6X10-4 mm Hg @ 25 °C /Estimated/.

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.