8.22312

4-Aminobenzoic acid

≥99.0% (acidimetric)

• Synonym(s): 4-Aminobenzoic acid, PABA
• Empirical Formula (Hill Notation): C₇H₇NO₂
• CAS Number: 150-13-0
• Molecular Weight: 137.14
• MDL number: MFCD00007894
• UNSPSC Code: 12352106
• EC Index Number: 205-753-0
• NACRES: NA.22

Properties

• product name: 4-Aminobenzoic acid, for synthesis
• Quality Level: 200
• assay: ≥99.0% (acidimetric)
• form: solid
• potency: 6000 mg/kg LD₅₀, oral (Rat)
• pH: 3.5 (20 °C, 5 g/L in H₂O)
• mp: 186-189 °C
• density: 1.38 g/cm³ at 20 °C
• bulk density: 200 kg/m³
• storage temp.: 2-30°C
• 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

Description

Application

• Synthesis of Yellow Fluorescence Carbon Dots: 4-Aminobenzoic acid is used to produce yellow fluorescence carbon dots, highlighting its application in vitamin B(12) detection and cell imaging (Zhao et al., 2023).
• Enhanced Production of 4-Amino-3-Hydroxybenzoic Acid: 4-hydroxybenzoate 3-hydroxylase was engineered to convert glucose into 4-amino-3-hydroxybenzoic acid in Corynebacterium glutamicum, illustrating a biotechnological application of 4-Aminobenzoic acid (Nonaka et al., 2023).
• Electrochemical Sensor Development: The compound was used to functionalize diazonium salt modified screen-printed graphene electrodes, creating a rapid diagnostic tool for detecting interleukin-6 (IL-6), relevant in sepsis diagnosis (Jesadabundit et al., 2023).

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Melting range (lower value): ≥ 185 °C
Melting range (upper value): ≤ 188 °C
Identity (IR): passes test

Safety Information

• hcodes: H412
• pcodes: P273 - P501
• Hazard Classifications: Aquatic Chronic 3
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: 339.8 °F
• flash_point_c: 171 °C