Substance profile
Diphenylguanidine
Diphenylguanidine is monoclinic needles (crystalized from alcohol and toluene) with a slight odor.
01 · Identification
What Diphenylguanidine is
Diphenylguanidine is monoclinic needles (crystalized from alcohol and toluene) with a slight odor. Its molecular formula is C13H13N3 and its molecular weight is 211.26 g/mol. It boils at 170 °C, melts at 150 °C.
Under the GHS it carries the signal word Warning.
Other names for Diphenylguanidine
- 1,3-diphenylguanidine
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 |
|---|---|
| H361f | Suspected of damaging fertility. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P264, P270, P273, P280, P301, P302, P305, P312, P313, P330, P332, P337, P338, P352, P391, P501
03 · Physical and chemical properties
Diphenylguanidine 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 | 170 °C (338 °F) | above this value | CAMEO |
| 170 °C (338 °F) | decomposes, decomposes | HSDB | |
| Melting point | 150 °C (302 °F) | HSDB | |
| Density | 1.19 g/cm³ | ICSC | |
| 1.13 g/cm³ | at 20 °C | HSDB | |
| Solubility | Soluble in ethanol, carbon tetrachloride, chloroform, toluene; very soluble in ethyl ether. | HSDB | |
| less than 1 mg/mL at 70 °F (NTP, 1992) | at 21.11 °C | CAMEO | |
| In water, 1,000 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 1.2751 mmHg | at 20 °C | ICSC |
| 0.000004 mmHg | at 25 °C | HSDB | |
| 0.00000845 mmHg | Haz-Map | ||
| Flash point | 197.78 °C (388 °F) | CAMEO | |
| 170 °C (338 °F) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Diphenylguanidine
Reactivity
1,3-DIPHENYLGUANIDINE behaves as an amine. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides. This chemical is incompatible with strong oxidizers. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Diphenylguanidine in the storage compatibility matrix →