Substance profile
Diphacinone
Diphacinone is yellow crystals and is odorless.
01 · Identification
What Diphacinone is
Diphacinone is yellow crystals and is odorless. Its molecular formula is C23H16O3 and its molecular weight is 340.4 g/mol. It melts at 147 °C.
Under the GHS it carries the signal word Danger.
Other names for Diphacinone
- diphacinone (ISO)
- 2-diphenylacetylindan-1,3-dione
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 |
|---|---|
| H300 | Fatal if swallowed. |
| H372 | Causes 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>. |
Precautionary statements: P260, P270, P301, P310, P314, P330
03 · Physical and chemical properties
Diphacinone 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 | 147 °C (296.6 °F) | ICSC | |
| 143 °C (289.4 °F) | range, midpoint shown | HSDB | |
| Density | 1.87 g/cm³ | HSDB | |
| 1.3 g/cm³ | ICSC | ||
| 1.281 g/cm³ | at 25 °C | DOE PAC | |
| Solubility | In water, 0.3 mg/L, temp not specified | HSDB | |
| Soluble in methyl cyanide, cyclohexane | HSDB | ||
| SOL IN ETHER, GLACIAL ACETIC ACID | HSDB | ||
| Vapor pressure | 1.2e-8 mmHg | HSDB | |
| 1.03e-10 mmHg | at 25 °C | HSDB | |
| Vapor pressure, Pa at 25 °C: (negligible) | at 25 °C | ICSC | |
| Corrosivity | NON-CORROSIVE | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Diphacinone
Reactivity
DIPHACINONE is a ketone, and behaves as a weak acid. Forms water soluble alkali metal salts. Ketones are reactive with many acids and bases liberating heat and flammable gases (e.g., H2). The amount of heat may be sufficient to start a fire in the unreacted portion of the ketone. Ketones react with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas (H2) and heat. Ketones are incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. They react violently with aldehydes, HNO3, HNO3 + H2O2, and HClO4.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Diphacinone in the storage compatibility matrix →