Catalog Number
ACM150130-4
Product Name
4-Aminobenzoic acid
Description
4-Aminobenzoic acid, also known as para-aminobenzoic acid (PABA), is utilized as a precursor in the synthesis of aromatic amines and azo dyes.
Synonyms
para-Aminobenzoic acid, PABA, Vitamin Bx, Vitamin H1
IUPAC Name
4-aminobenzoic acid
Molecular Formula
H2NC6H4CO2H
Canonical SMILES
Nc1ccc(cc1)C(O)=O
InChI
1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)
InChI Key
ALYNCZNDIQEVRV-UHFFFAOYSA-N
Melting Point
187-189 ℃(lit.)
Solubility
ethanol: 50 mg/mL, clear, colorless to faintly yellow
Appearance
White to off white crystalline powder
Application
4-Aminobenzoic acid is used: As a building block in the synthesis of Polyamides As a substrate in folic acid production In the synthesis of Schiff base As an organic ligand in metal-organic framework (MOFs) synthesis
Biological Source
synthetic (organic)
Color/Form
Monoclinic prisms from dilute alcohol;Light buff crystals; white when pure;Yellowish to red crystals or prisms;White or slightly yellow crystals or crystalline powder
Covalently-Bonded Unit Count
1
Exact Mass
137.047678g/mol
Monoisotopic Mass
137.047678g/mol
Other Experimental
May turn slightly yellow on prolonged exposure to light and air;Henry's Law constant = 1.5X10-10 atm-cu m/mole at 25 °C (est);Hydroxyl radical reaction rate constant = 4.0X10-11 cu cm/molecule sec at 25 °C (est)
Reaction Suitability
reaction type: solution phase peptide synthesis
Safety Description
26-36-37/39
Stability
Stable. Incompatible with strong oxidizing agents. Combustible. Sensitive to light and air. May discolour on exposure to light.
Supplemental Hazard Statements
H302-H315-H317-H319-H335-H413
Vapor Pressure
3.45E-05mmHg at 25°C
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