Substance profile
m-Toluidine
m-Toluidine is a colorless to light yellow liquid with an aromatic, amine-like odor.
01 · Identification
What m-Toluidine is
m-Toluidine is a colorless to light yellow liquid with an aromatic, amine-like odor. Its molecular formula is C7H9N and its molecular weight is 107.15 g/mol. It boils at 203 °C, melts at -31.3 °C, is very soluble in water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 2nd degree.
Other names for m-Toluidine
- 3-aminotoluene
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H331 | Toxic if inhaled. |
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
Precautionary statements: P260, P270, P271, P273, P280, P301, P302, P304, P310, P314, P330, P352, P391, P501
03 · Physical and chemical properties
m-Toluidine properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 203.3 °C (397.9 °F) | HSDB | |
| 202.78 °C (397 °F) | NIOSH | ||
| 203.39 °C (398.1 °F) | at 760 mmHg | CAMEO | |
| Melting point | -31.3 °C (-24.3 °F) | HSDB | |
| -30.56 °C (-23 °F) | NIOSH | ||
| -30.39 °C (-22.7 °F) | CAMEO | ||
| Density | 0.999 g/cm³ | NIOSH | |
| 0.9889 g/cm³ | at 20 °C | HSDB | |
| 0.989 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Very soluble in acetone, benzene, diethyl ether, ethanol | HSDB | |
| Soluble in alcohol, ether, dilute acids | HSDB | ||
| In water, 1.50X10+4 mg/L at 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 0.303 mmHg | at 25 °C | HSDB |
| 0.1275 mmHg | at 25 °C | ICSC | |
| 1 mmHg | at 41 °C | DOE PAC | |
| Flash point | 86.11 °C (187 °F) | HSDB | |
| 85.56 °C (186 °F) | CAMEO | ||
| Autoignition temperature | 481 °C (897.8 °F) | HSDB | |
| 481.67 °C (899 °F) | CAMEO | ||
| 480 °C (896 °F) | ICSC | ||
| Lower explosive limit (LEL) | 1.1 % by volume | HSDB | |
| Upper explosive limit (UEL) | 6.6 % by volume | HSDB | |
| Vapor density | 3.9 (air = 1) | HSDB | |
| 3.7 (air = 1) | ICSC | ||
| Odor threshold | Odor Threshold Low: 0.46 [ppm] | Haz-Map | |
| Odor Threshold High: 5.9 [ppm] | Haz-Map | ||
| Odor threshold values from American Industrial Hygiene Association | Haz-Map | ||
| Critical temperature and pressure | 435.85 °C (816.5 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling m-Toluidine
Storage conditions
/Store/ separated from strong oxidants, strong acids, food and feedstuffs. Cool. Dry. Well closed. Ventilation along the floor.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Can react vigorously on contact with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
M-TOLUIDINE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides. Can react vigorously with oxidizing reagents. Emits toxic fumes of oxides of nitrogen when heated to decomposition [Lewis, 3rd ed., 1993, p. 1253].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check m-Toluidine in the storage compatibility matrix →