4-Aminobenzoic acid4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the two functional groups are attached to the benzene ring across from one another in the para position) is an organic compound with the formula H2NC6H4CO2H. Read from the Chembox of the Wikipedia article 4-Aminobenzoic acid, revision 1373719846.

Property

Value

Formula

C7H7NO2, 137.14 g/mol

Melting point

188 °C

Boiling point

340 °C

Density

1.374 g/cm³

pKa

2.42

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