Substance profile
4-methyl-m-phenylenediamine
4-methyl-m-phenylenediamine is needles from water; crystals from alcohol.
01 · Identification
What 4-methyl-m-phenylenediamine is
4-methyl-m-phenylenediamine is needles from water; crystals from alcohol. Its molecular formula is C7H10N2 and its molecular weight is 122.17 g/mol. It boils at 292 °C, melts at 99 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for 4-methyl-m-phenylenediamine
- 2,4-toluenediamine
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 |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H341 | Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H361f | Suspected of damaging fertility. |
| H301 | Toxic if swallowed. |
| H312 | Harmful in contact with skin. |
| 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>. |
| H317 | May cause an allergic skin reaction. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P260, P261, P270, P272, P273, P280, P301, P302, P308, P310, P312, P313, P314, P330, P333, P352, P391, P501
03 · Physical and chemical properties
4-methyl-m-phenylenediamine 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 | 292 °C (557.6 °F) | HSDB | |
| 292.22 °C (558 °F) | NIOSH | ||
| 292.22 °C (558 °F) | at 760 mmHg | CAMEO | |
| Melting point | 99 °C (210.2 °F) | HSDB | |
| 98.89 °C (210 °F) | NIOSH | ||
| Density | 1.26 g/cm³ | ICSC | |
| 1.05 g/cm³ | at 100 °C | NIOSH | |
| 1.045 g/cm³ | at 100 °C | CAMEO | |
| Solubility | Very soluble in water, ethanol, ethyl ether; soluble in acetone, carbon disulfide | HSDB | |
| Soluble in water, alcohol, and ether | HSDB | ||
| Soluble | NIOSH | ||
| Vapor pressure | 0.00017 mmHg | at 25 °C | HSDB |
| 1 mmHg | at 106.5 °C | HSDB | |
| 1 mmHg | at 106.67 °C | NIOSH | |
| Flash point | 149 °C (300.2 °F) | HSDB | |
| 148.89 °C (300 °F) | NIOSH | ||
| Autoignition temperature | 475 °C (887 °F) | ICSC | |
| Lower explosive limit (LEL) | Combustible Solid | NIOSH | |
| Vapor density | 4.2 (air = 1) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 4-methyl-m-phenylenediamine
Storage conditions
PRECAUTIONS FOR "CARCINOGENS": Storage site should be as close as practical to lab in which carcinogens are to be used, so that only small quantities required for ... expt need to be carried. Carcinogens should be kept in only one section of cupboard, an explosion-proof refrigerator or freezer (depending on chemicophysical properties ...) that bears appropriate label. An inventory ... should be kept, showing quantity of carcinogen & date it was acquired ... Facilities for dispensing ... should be contiguous to storage area. /Chemical Carcinogens/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
None reported
Source: The National Institute for Occupational Safety and Health (NIOSH)
Reactivity
2,4-TOLUENEDIAMINE 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. Reacts vigorously with oxidizing agents (USCG, 1999).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 4-methyl-m-phenylenediami… in the storage compatibility matrix →