Substance profile
Dihexyl phthalate
Dihexyl phthalate is a clear, oily liuid with a slightly aromatic odor.
01 · Identification
What Dihexyl phthalate is
Dihexyl phthalate is a clear, oily liuid with a slightly aromatic odor. Its molecular formula is C20H30O4 and its molecular weight is 334.4 g/mol. It boils at 350 °C, melts at -58 °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 |
|---|---|
| H360FD | May damage fertility. May damage the unborn child. |
03 · Physical and chemical properties
Dihexyl phthalate 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 | 350 °C (662 °F) | at 735 mmHg | CAMEO |
| Melting point | -58 °C (-72.4 °F) | HSDB | |
| -57.78 °C (-72 °F) | CAMEO | ||
| Density | 0.995 g/cm³ | OSHA | |
| 0.995 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Phthalate esters are soluble to various extents in many common organic solvents and oils, but have a relatively low solubility in water. | Phthalate esters | HSDB |
| Insoluble (NTP, 1992) | CAMEO | ||
| In water, 0.05 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.000014 mmHg | at 25 °C | HSDB |
| 0.000014 mmHg | Haz-Map | ||
| Flash point | 193.89 °C (381 °F) | HSDB | |
| 176.67 °C (350 °F) | CAMEO | ||
| Vapor density | 11.5 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Dihexyl phthalate
Incompatible materials
... Can react with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
DI-N-HEXYL PHTHALATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. This compound can react with oxidizing materials and strong alkaline materials. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Dihexyl phthalate in the storage compatibility matrix →