4-aminobenzoic acid
Also known as: p-Aminobenzoic acid, PABA, Vitamin Bx, Vitamin H1, 4-Carboxyaniline
4-aminobenzoic acid (CAS 150-13-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H7NO2 and a molecular weight of 137.136 g/mol. Key properties include a melting point of 187-189 °C(lit.), a boiling point of 339.9±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 159.4±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 150-13-0
- Jingsj CID
- J-5493-1
- Molecular Formula
- C7H7NO2
- Molecular Weight
- 137.136 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 187-189 °C(lit.) |
|---|---|
| Boiling Point | 339.9±25.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 159.4±23.2 °C |
| Exact Mass | 137.047684 |
| PSA | 63.32000 |
| LogP | 0.83 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.637 |
| Additional Property | 4.7 g/L (20 ºC) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
- H413
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|
Customs & Trade Information
| HS Code | 2922499990 |
|---|---|
| Summary | HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-aminobenzoic acid?
The CAS number of 4-aminobenzoic acid is 150-13-0.
What are the molecular formula and molecular weight of 4-aminobenzoic acid?
4-aminobenzoic acid has molecular formula C7H7NO2 and molecular weight 137.136 g/mol.
Is 4-aminobenzoic acid hazardous?
4-aminobenzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-aminobenzoic acid?
For 4-aminobenzoic acid, Upstream Products: 4-Nitrobenzoic acid, 4-Azidobenzoic acid, 4-Iodoaniline; Downstream Products: 4-Hydroxy-2-methylquinoline-6-carboxylic acid, 2-phenyl-1H-indole-5-carboxylic acid, 4-Guanidinobenzoic acid hydrochloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-aminobenzoic acid (CAS 150-13-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5493-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.