Names | |
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Preferred IUPAC name
3-Phenylpropanoic acid | |
Other names
Phenylpropionic acid, Benzenepropanoic Acid, β-Phenylpropionic Acid, Benzylacetic Acid, Dihydrocinnamic Acid, β-Phenylpropanoic Acid[1]
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.007.204 |
KEGG | |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C9H10O2 | |
Molar mass | 150.177 g/mol[2] |
Appearance | White crystalline solid; faint, sweet, somewhat balsamic and coumarin-like odor[3] |
Density | 1.126 g/cm3 |
Melting point | 47 to 50 °C (117 to 122 °F; 320 to 323 K) |
Boiling point | 280 °C (536 °F; 553 K) |
5.9 g/L | |
log P | 1.839[3] |
Acidity (pKa) | 4.66 (H2O)[4] |
Hazards | |
Flash point | 110 °C (230 °F; 383 K)[3] |
Related compounds | |
Related compounds
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Benzoic acid, Phenylacetic acid, Cinnamic acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Phenylpropanoic acid or hydrocinnamic acid is a carboxylic acid with the formula C9H10O2 belonging to the class of phenylpropanoids. It is a white, crystalline solid with a sweet, floral scent at room temperature. Phenylpropanoic acid has a wide variety of uses including cosmetics, food additives, and pharmaceuticals.[5]