Product Overview

Ortho Toluidine is a colorless to pale yellow liquid with an aniline-like odor, turning reddish-brown upon exposure to air and light. It is extensively utilized as an intermediate in the production of dyes, pigments, pesticides, and pharmaceuticals.

The compound has reported occurrences in coal tar, gasoline fractions, tobacco smoke, and is a known metabolite in certain processes. It poses health hazards, being a confirmed carcinogen and exhibiting toxic effects on various organs. Industrial uses include applications in rubber accelerators, textile printing, and pharmaceutical manufacturing.

Characteristic Data

Boiling Point200 °C
Melting point-23 °C
Density1.008 g/mL at 25 °C(lit.)
Vapor density3.7 (vs air)
Vapor pressure0.26 mm Hg ( 25 °C)
Flash point185 °F
Storage temp2-8°C
Solubility1.5 g/100 mL (25°C)
Colorlight yellow to light amber
OdorAromatic, aniline-like
PH7.4 (H2O, 20℃)Aqueous solution
Water Solubility1.5 g/100 mL (25 ºC)
SensitiveAir & Light Sensitive


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To be a reliable supplier by providing innovative products in service solutions.


To be a Leader in Heat Transfer Fluids (HTF) Business and grow our portfolio of speciality chemicals.


To provide customers with top quality products and services in a most responsible manner.

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o-Toluidine is an organic compound with the chemical formula CH₃C₆H₄NH₂. It is the most significant among the three isomeric toluidines, featuring a methyl group (CH₃) attached to the benzene ring at the ortho position.

o-Toluidine is inherently a colorless liquid. However, commercial samples often exhibit a yellowish tint, attributed to impurities or contaminants present in the sample.

o-Toluidine holds significance among the isomeric toluidines due to its unique chemical structure. This specific isomer is often preferred or utilized in various industrial applications, distinguishing it as the most important among the toluidine isomers.

o-Toluidine serves as a precursor in the synthesis of herbicides, notably contributing to the production of metolachlor and acetochlor. These herbicides play a crucial role in agricultural practices for weed control.

o-Toluidine finds applications in various industries, including agriculture for herbicide production. Additionally, it is utilized in the synthesis of dyes, pharmaceuticals, and other chemical compounds, showcasing its versatility in different industrial processes.

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