Substance profile
1,4-Diaminobenzene dihydrochloride
1,4-Diaminobenzene dihydrochloride is white to slightly reddish crystals.
01 · Identification
What 1,4-Diaminobenzene dihydrochlo… is
1,4-Diaminobenzene dihydrochloride is white to slightly reddish crystals. Its molecular formula is C6H10Cl2N2 and its molecular weight is 181.06 g/mol. It melts at 275 °C.
Under the GHS it carries the signal word Danger.
Other names for 1,4-Diaminobenzene dihydrochlo…
- benzene-1,4-diamine dihydrochloride
- p-phenylenediamine dihydrochloride
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. |
| 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: P260, P261, P264, P270, P271, P272, P273, P280, P301, P302, P304, P305, P310, P313, P330, P333, P337, P338, P352, P391, P501
03 · Physical and chemical properties
1,4-Diaminobenzene dihydrochlo… 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 |
|---|---|---|---|
| Melting point | 275 °C (527 °F) | ICSC | |
| 200 °C (392 °F) | above this value | CAMEO | |
| Solubility | FREELY SOL IN WATER; SLIGHTLY SOL IN ALC, ETHER | HSDB | |
| Solubility in water: very good | ICSC | ||
| greater than or equal to 100 mg/mL at 70 °F (NTP, 1992) | at 21.11 °C | CAMEO | |
| Vapor density | 6.2 (air = 1) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1,4-Diaminobenzene dihydrochlo…
Reactivity
Acidic organic/inorganic salts, such as 1,4-PHENYLENEDIAMINE DIHYDROCHLORIDE, are generally soluble in water. The resulting solutions contain moderate to high concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1,4-Diaminobenzene… in the storage compatibility matrix →