Substance profile
M-Phenylenediamine
M-Phenylenediamine is white crystals becoming red on exposure to air.
01 · Identification
What M-Phenylenediamine is
M-Phenylenediamine is white crystals becoming red on exposure to air. Its molecular formula is C6H8N2 and its molecular weight is 108.14 g/mol. It boils at 287 °C, melts at 65 °C.
Under the GHS it carries the signal word Danger.
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 |
|---|---|
| H341 | Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H331 | Toxic if inhaled. |
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H319 | Causes serious eye irritation. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P260, P261, P264, P270, P271, P272, P273, P280, P301, P302, P304, P305, P308, P310, P313, P330, P333, P337, P338, P352, P391, P501
03 · Physical and chemical properties
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 | 287 °C (548.6 °F) | at 760 mmHg | DOE PAC |
| 285.5 °C (545.9 °F) | range, midpoint shown | HSDB | |
| 283.06 °C (541.5 °F) | range, midpoint shown, at 760 mmHg | CAMEO | |
| Melting point | 65 °C (149 °F) | DOE PAC | |
| 62.5 °C (144.5 °F) | range, midpoint shown | HSDB | |
| 63.33 °C (146 °F) | range, midpoint shown | CAMEO | |
| Density | 1.139 g/cm³ | HSDB | |
| 1.14 g/cm³ | ICSC | ||
| 1.139 g/cm³ | at 25 °C | DOE PAC | |
| Solubility | In water, 2.38X10+5 mg/l at 20 deg | HSDB | |
| less than 1 mg/mL at 66 °F (NTP, 1992) | at 18.89 °C | CAMEO | |
| Vapor pressure | 1 mmHg | at 99.8 °C | HSDB |
| 1 mmHg | at 99.78 °C | CAMEO | |
| 0.9976 mmHg | at 99.8 °C | ICSC | |
| Flash point | 137.78 °C (280 °F) | CAMEO | |
| 187 °C (368.6 °F) | ICSC | ||
| Autoignition temperature | 560 °C (1040 °F) | CAMEO | |
| Vapor density | 3.7 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on M-Phenylenediamine
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Solubility
SOL IN WATER, METHANOL, ETHANOL, CHLOROFORM, ACETONE, DIMETHYLFORMAMIDE, METHYL ETHYL KETONE, DIOXANE; SLIGHTLY SOL IN ETHER, CARBON TETRACHLORIDE, ISOPROPANOL, DIBUTYL PHTHALATE. VERY SLIGHTLY SOL IN BENZENE, TOLUENE, XYLENE, BUTANOL.
Source: HSDB
05 · Handling and storage
Storing and handling M-Phenylenediamine
Storage conditions
KEEP WELL CLOSED & PROTECTED FROM LIGHT.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
1,3-PHENYLENEDIAMINE an aromatic amine, neutralizes acids, acid chlorides, acid anhydrides and chloroformates in exothermic reactions to form salts. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Incompatible with oxidizing agents (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check M-Phenylenediamine in the storage compatibility matrix →