Acetylsalicylic acid
Also known as: Aspirin, 2-Acetoxybenzoic acid, o-Acetylsalicylic acid, ASA, A.S.A., Acetard, Acetoxybenzoic acid, Acetyl-SAL, Acetyonyl, Adiro, Asatard, Aspec, Aspr, Aspro, Aspropharm, Bayer, Benzoic acid, 2-(acetyloxy)-, Cardioaspirina, Doril, ECM
Acetylsalicylic acid (CAS 50-78-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O4 and a molecular weight of 180.157 g/mol. Key properties include a melting point of 134-136 °C(lit.), a boiling point of 321.4±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 131.2±16.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 50-78-2
- Jingsj CID
- J-8258-6
- Molecular Formula
- C9H8O4
- Molecular Weight
- 180.157 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 134-136 °C(lit.) |
|---|---|
| Boiling Point | 321.4±25.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 131.2±16.7 °C |
| Exact Mass | 180.042252 |
| PSA | 63.60000 |
| LogP | 1.19 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.551 |
| Additional Property | 3.3 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | COX-1:27.75 μM (IC50) COX-2:1.17 mM (IC50) |
|---|---|
| Additional Information | [1]. Mitchell JA, et al. Selectivity of nonsteroidal antiinflammatory drugs as inhibitors of constitutive and induciblecyclooxygenase. Proc Natl Acad Sci U S A. 1993 Dec 15;90(24):11693-7. [2]. Vane JR, et al. The mechanism of action of aspirin. Thromb Res. 2003 Jun 15;110(5-6):255-8. [3]. Wu KK, et al. Aspirin and other cyclooxygenase inhibitors: new therapeutic insights. Semin Vasc Med. 2003 May;3(2):107-12. [4]. Kopp E, et al. Inhibition of NF-kappa B by sodium salicylate and aspirin. Science. 1994 Aug 12;265(5174):956-9. [5]. Blanco FJ, et al. Effect of antiinflammatory drugs on COX-1 and COX-2 activity in human articular chondrocytes. J Rheumatol. 1999 Jun;26(6):1366-73. |
Customs & Trade Information
| HS Code | 2916310020 |
|---|---|
| Summary | 2916310020 2-acetoxybenzoic acid |
Frequently Asked Questions
What is the CAS number of Acetylsalicylic acid?
The CAS number of Acetylsalicylic acid is 50-78-2.
What are the molecular formula and molecular weight of Acetylsalicylic acid?
Acetylsalicylic acid has molecular formula C9H8O4 and molecular weight 180.157 g/mol.
Is Acetylsalicylic acid hazardous?
Acetylsalicylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Acetylsalicylic acid?
For Acetylsalicylic acid, Upstream Products: o-Tolyl acetate, Salicylic acid, acetic acid; Downstream Products: 4-Hydroxy-2-oxo-2H-chromene-3-carbonitrile, Guacetisal, Guaimesal.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Acetylsalicylic acid (CAS 50-78-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8258-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.