Azelaic acid
Also known as: Nonanedioic acid, 1,7-Heptanedicarboxylic acid, Lepargylic acid, Anchoic acid, Azelainic acid, Azelex, Skinoren
Azelaic acid (CAS 123-99-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H16O4 and a molecular weight of 188.221 g/mol. Key properties include a melting point of 98-103 ºC, a boiling point of 286 ºC (100 mmHg), a density of 1.1±0.1 g/cm3 and a flash point of 215 ºC. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 123-99-9
- Jingsj CID
- J-44403-1
- Molecular Formula
- C9H16O4
- Molecular Weight
- 188.221 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 98-103 ºC |
|---|---|
| Boiling Point | 286 ºC (100 mmHg) |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 215 ºC |
| Exact Mass | 188.104858 |
| PSA | 74.60000 |
| LogP | 1.33 |
| Additional Property | 6.5 (vs air) |
| Vapor Pressure | 0.0±1.8 mmHg at 25°C |
| Refractive Index | 1.475 |
| Additional Property | 2.4 g/L (20 ºC) |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Jung HW, et al. Priming in systemic plant immunity. Science. 2009 Apr 3;324(5923):89-91. [2]. Liu RH, et al. Azelaic acid in the treatment of papulopustular rosacea: a systematic review of randomized controlled trials. Arch Dermatol. 2006 Aug;142(8):1047-52. |
Customs & Trade Information
| HS Code | 2917139000 |
|---|---|
| Summary | 2917139000 azelaic acid, sebacic acid, their salts and esters VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Azelaic acid?
The CAS number of Azelaic acid is 123-99-9.
What are the molecular formula and molecular weight of Azelaic acid?
Azelaic acid has molecular formula C9H16O4 and molecular weight 188.221 g/mol.
Is Azelaic acid hazardous?
Azelaic acid has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of Azelaic acid?
For Azelaic acid, Upstream Products: oleic acid, Methyl oleate, 9,10-dihydroxystearic acid; Downstream Products: 9-Hydroxynonanoic acid, Azelaic dihydrazide, Heptacosane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Azelaic acid (CAS 123-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44403-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.