D

Diethyl phthalate

IUPAC: diethyl benzene-1,2-dicarboxylate

C12H14O4 Organic Compounds CAS 84-66-2
Expert Written | Fact Checked | Sources Cited | AllChemicals Editorial Team
Quick Reference
Formula / NotationC12H14O4
CAS Number84-66-2
Molecular Weight222.24
Melting Point27 °F (NTP, 1992)
Boiling Point568 °F at 760 mmHg (NTP, 1992)
Density1.12 at 68 °F (USCG, 1999) - Denser than water; will sink
Solubilityless than 1 mg/mL at 66 °F (NTP, 1992)
AppearanceDiethyl phthalate appears as a clear, colorless liquid without significant odor. More dense than water and insoluble in water. Hence sinks in water. Primary hazard is to the environment. Spread to ...
Also Known Asdiethyl benzene-1,2-dicarboxylate; 84-66-2; Ethyl phthalate; phthalic acid diethyl ester; Anozol; Neantine; Phthalol; Solvanol; Palatinol A; Placidol E
CategoryOrganic Compounds

What is Diethyl phthalate?

Diethyl phthalate is the diethyl ester of benzene-1,2-dicarboxylic acid. It has a role as a teratogenic agent, a neurotoxin and a plasticiser. It is an ethyl ester, a phthalate ester and a diester.

Formula & Notation

C12H14O4

IUPAC Name: diethyl benzene-1,2-dicarboxylate

Other Names / Synonyms: diethyl benzene-1,2-dicarboxylate; 84-66-2; Ethyl phthalate; phthalic acid diethyl ester; Anozol; Neantine; Phthalol; Solvanol; Palatinol A; Placidol E

Properties & Characteristics

Appearance: Diethyl phthalate appears as a clear, colorless liquid without significant odor. More dense than water and insoluble in water. Hence sinks in water. Primary hazard is to the environment. Spread to .... Molecular formula: C12H14O4. Molecular weight: 222.24 g/mol. Boiling point: 568 °F at 760 mmHg (NTP, 1992). Melting point: 27 °F (NTP, 1992). Density: 1.12 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: less than 1 mg/mL at 66 °F (NTP, 1992). Vapor pressure: 1 mmHg at 227.8 °F ; 5 mmHg at 285.3 °F (NTP, 1992). LogP: 2.5.

Physical Data

PropertyValue
Melting Point27 °F (NTP, 1992)
Boiling Point568 °F at 760 mmHg (NTP, 1992)
Density1.12 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight222.24
Solubilityless than 1 mg/mL at 66 °F (NTP, 1992)
AppearanceDiethyl phthalate appears as a clear, colorless liquid without significant odor. More dense than water and insoluble in water. Hence sinks in water. Primary hazard is to the environment. Spread to ...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Diethyl phthalate
Formula C12H14O4
CAS Number 84-66-2
Molecular Weight 222.24
Synonyms diethyl benzene-1,2-dicarboxylate; 84-66-2; Ethyl phthalate; phthalic acid diethyl ester; Anozol; Neantine; Phthalol; Solvanol; Palatinol A; Placidol E

Frequently Asked Questions

Diethyl phthalate is the diethyl ester of benzene-1,2-dicarboxylic acid. It has a role as a teratogenic agent, a neurotoxin and a plasticiser. It is an ethyl ester, a phthalate ester and a diester.

More "D" Terms

View all "D" terms →
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.