o-Toluidine
CAS 95-53-4
EC 202-429-0
Formula C7H9N
MW 107.15 g/mol
Amines Textile, Leather & PaperPersonal Care & CosmeticsPrinting & Packaging Cross-linking & Curing
Description
o-Toluidine (CAS 95-53-4, EC 202-429-0), also known as 2-Aminotoluene, 2-Toluidine, and o-Tolylamine, is an aromatic amine with the molecular formula C7H9N. It carries no assigned E-code and is classified under HS code 29214300.
In textile and leather processing, o-Toluidine acts as a precursor in azo dye synthesis, where its amino group couples with diazonium salts to produce colorants that bond directly to fiber substrates. In rubber and polymer manufacturing, it functions as a cross-linking agent, reacting with epoxy or isocyanate systems to build network structures that improve mechanical strength and chemical resistance.
o-Toluidine is supplied as a technical-grade liquid and is subject to REACH regulation, including classification as a Category 1B carcinogen under CLP. Procurement teams should confirm SDS documentation and substance authorization status before ordering. Standard packaging formats include drums and IBC containers.
In textile and leather processing, o-Toluidine acts as a precursor in azo dye synthesis, where its amino group couples with diazonium salts to produce colorants that bond directly to fiber substrates. In rubber and polymer manufacturing, it functions as a cross-linking agent, reacting with epoxy or isocyanate systems to build network structures that improve mechanical strength and chemical resistance.
o-Toluidine is supplied as a technical-grade liquid and is subject to REACH regulation, including classification as a Category 1B carcinogen under CLP. Procurement teams should confirm SDS documentation and substance authorization status before ordering. Standard packaging formats include drums and IBC containers.
Physical Properties
| Melting Point | -16.3 °C |
| Boiling Point | 200.3 °C |
| Density | 1.008 g/cm³ @ Temp: 20 °C |
| Flash Point | 185 °F |
| Appearance | Light-yellow liquid, becomes reddishbrown on exposure to air and light. Soluble in alcohol and ether; very slightly soluble in water. Combustible. |
| Color | light yellow to light amber |
| Odor | Aromatic, aniline-like. |
| Form | liquid |
| Water Solubility | 1.5 g/100 mL (25 ºC) |
| Vapor Pressure | 0.26 mm Hg ( 25 °C) |
| Refractive Index | n 20/D 1.572(lit.) |
| pH | 7.4 (H2O, 20℃)Aqueous solution |
| Log P | 1.4 at 24.5℃ |
Safety & Handling (Learn More)
Danger GHS06 GHS08 GHS09 GHS07
H
H227H301H302H312H313H315H316H319H331H332H336H340H341H350H370H372H373H400H410H411H301+H331
P
P203P210P260P261P264P270P271P273P280P316P317P318P319P321P330P391P403P405P501P264+P265P301+P316P301+P317P302+P317P302+P352P304+P340P308+P316P332+P317P337+P317P362+P364P370+P378P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29214300 |
| UN Number | 2920 |
| ADR Class | 8 |
| Packing Group | I |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Other Names
2-methylaniline2-Toluidineo-Tolylamine2-AMINOTOLUENE
Related Products
Raw Materials
Need a chemical? Get a quote within 24 hours.