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Names | |
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Preferred IUPAC name
Diethyl benzene-1,2-dicarboxylate | |
Other names
Diethyl phthalate
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.001.409 |
KEGG | |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C12H14O4 | |
Molar mass | 222.24 g/mol |
Appearance | Colourless, oily liquid |
Density | 1.12 g/cm3 at 20 °C |
Melting point | −4 °C (25 °F; 269 K) |
Boiling point | 295 °C (563 °F; 568 K) |
1080 mg/L at 25 °C | |
log P | 2.42 |
Vapor pressure | 0.002 mmHg (25 °C)[2] |
−127.5·10−6 cm3/mol | |
Hazards | |
NFPA 704 (fire diamond) | |
Flash point | 161.1 °C (322.0 °F; 434.2 K)[2] |
Explosive limits | 0.7%, lower[2] |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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8600 mg/kg (rat) |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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None[2] |
REL (Recommended)
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TWA 5 mg/m3[2] |
IDLH (Immediate danger)
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N.D.[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Diethyl phthalate (DEP) is a phthalate ester. It occurs as a colourless liquid without significant odour but has a bitter, disagreeable taste. It is more dense than water and insoluble in water; hence, it sinks in water.