|Preferred IUPAC name
Bacterial vitamin H1
3D model (Jmol)
|Molar mass||137.14 g·mol−1|
|Melting point||187 to 189 °C (369 to 372 °F; 460 to 462 K)|
|Boiling point||340 °C (644 °F; 613 K)|
|1 g/170 mL (25 °C)
1 g/90 mL (90 °C)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the number 4 carbon in the benzene ring is also known as the para position) is an organic compound with the formula H2NC6H4CO2H. PABA is a white solid, although commercial samples can appear gray. It is slightly soluble in water. It consists of a benzene ring substituted with amino and a carboxyl groups. The compound occurs naturally.