甲苯胺

Description

toluidine · CAS 26915-12-8 · C7H9N. UNII I1D0KL7I4U. Boiling Point: 393 °F at 760 mmHg (USCG, 1999); Boiling Point: 200.4 °C; Boiling Point: 200 °C.

Identification

CAS Registry Number	26915-12-8
PubChem CID	7813
Molecular formula	C7H9N
IUPAC name	4-methylaniline
UNII (FDA)	I1D0KL7I4U

Computed Descriptors

Molecular Weight	107.15
XLogP3	1.4
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	107.073499291
Monoisotopic Mass	107.073499291
Topological Polar Surface Area	26
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Boiling Point	393 °F at 760 mmHg (USCG, 1999)
Boiling Point	200.4 °C
Boiling Point	200 °C
Boiling Point	393 °F
Boiling Point	200.4 °C @760 [mm Hg]
Melting Point	112.1 °F (USCG, 1999)
Melting Point	43.6 °C
Melting Point	44-45 °C
Melting Point	112 °F
Melting Point	42 °C

Physical description & handling notes

• P-toluidine is a colorless solid. Melting point 44 °C (111 °F). Specific gravity 1.046. Vapor heavier than air. Produces toxic oxides of nitrogen during combustion. May be absorbed through the skin. Used in dyes, and in organic chemical manufacturing.
• One or the other or a mixture of the isomers ortho-toluidine, meta-toluidine, and para-toluidine. White lustrous plates or leaflets or colorless to light yellow liquids. Slightly denser than water. Slightly soluble in water. Aromatic odors Toxic by inhalation of vapors or dusts and by skin absorption. Toxic oxides of nitrogen produced during combustion.
• Other Solid; CBI
• White solid with an aromatic odor. [Note: Used as a basis for many dyes.]; [NIOSH]
• COLOURLESS FLAKES. TURNS DARK ON EXPOSURE TO AIR AND LIGHT.
• White solid with an aromatic odor.

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS

GHS Hazard Classification

Reported hazard statements	H301, H311, H317, H319, H331, H351, H400, H411 (25.3%)

Documented Uses

• Intermediate used in the organic synthesis of dyes, reagents, and other chemicals; [ACGIH]
• Smoking cigarettes [Category: Food & Drugs]
• p-Toluidine is used exclusively as an intermediate in chemical processes. The largest subsequent product of p-toluidine is 4B acid (4-toluidine-3-sulfonic acid, an intermediate for pigment production) which amounts to about 2/3 of world p-toluidine demand. p-Toluidine is also used in minor amounts for the manufacturing of : m-nitro-p-toluidine, acetoacetate-p-toluidine, di-p-toluidinoterephthalic acid, which all are intermediates in the production of pigments; dehydro-p-toluidine, an intermediate in the production
• Manufacture of various dyes and other organic chemicals. Reagent for lignin, nitrite, chloroglucinol
• Dyes: Basic Red 9, Acid Green 25
• Preparation of ion exchange resins

Synonyms

p-Toluidine; 4-Methylaniline; 106-49-0; 4-Toluidine; 4-Methylbenzenamine; p-Tolylamine; 4-AMINOTOLUENE; p-Methylaniline; Benzenamine, 4-methyl-; p-Toluidin; p-Aminotoluene; p-Methylbenzenamine; 1-Amino-4-methylbenzene; Naphtol AS-KG; Naphtol AS-KGLL; Aniline, p-methyl-

Frequently Asked Questions

What are the CAS number and molecular formula of toluidine?

CAS 26915-12-8; molecular formula C7H9N; molecular weight — g/mol.

What other names is toluidine known by?

p-Toluidine, 4-Methylaniline, 106-49-0, 4-Toluidine, 4-Methylbenzenamine, p-Tolylamine.

What is the regulatory status of toluidine?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS.

Is toluidine classified as hazardous?

Hazard statements reported: H301, H311, H317, H319, H331.

What are the key physical properties of toluidine?

Boiling Point: 393 °F at 760 mmHg (USCG, 1999); Boiling Point: 200.4 °C; Boiling Point: 200 °C; Boiling Point: 393 °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.