4-Aminobenzoic acid (PABA, para-aminobenzoic acid) is a B vitamin derivative and is used by bacteria to synthesize folate (vitamin B9), an essential vitamin for bacteria and humans. 4-Aminobenzoic acid is sparingly soluble in water at 6.11 mg/mL.
CAS Number
150-13-0
Molecular Formula
C7H7NO2
Molecular Weight
137.14
Storage Conditions
Ambient, air and light sensitive
Tariff Code
2922.49.1000
Appearance
White crystalline powder
Impurity Profile
Volatile Diazotizable Substances: Not more than 0.002%
Ordinary Impurities: Not more than 1.0%
Limit of Aniline: Not more than 10ppm
Limit of p-Toluidine: Not more than 10ppm
Melting Point
186-189°C
Loss on Drying
≤0.2%
Residue On Ignition
≤0.1%
Heavy Metals
≤0.002%
