trans-Cinnamic Acid
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trans-Cinnamic Acid

CAS 140-10-3
Structure
Synonyms Benzalaceticacid
IUPAC Name (E)-3-Phenylprop-2-enoic acid
Molecular Weight 148.16
Molecular Formula C9H8O2
Canonical SMILES C1=CC=C(C=C1)C=CC(=O)O
InChI InChI=1S/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6+
InChI Key WBYWAXJHAXSJNI-VOTSOKGWSA-N
Boiling Point 300 °C(lit.)
Melting Point 133 °C(lit.)
Flash Point >230 °F
Purity 99%+
Density 1.248 g/cm³
Refractive Index 1.5049
pKa 4.44(at 25 °C)
pH 3-4 (0.4g/l, H₂O, 20°C)
Solubility in Water 0.4 g/L
Appearance Solid

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