11-Mercaptoundecanoic acid
Also known as: MUA, MUDA, 11-sulfanylundecanoic acid, 10-Carboxy-1-decanethiol, 11-Mercaptoundecanoic acid solution, Undecanoic acid, 11-mercapto-, NanoThinks Acid 11
11-Mercaptoundecanoic acid (CAS 71310-21-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H22O2S and a molecular weight of 218.35600 g/mol. Key properties include a melting point of 46-50ºC(lit.), a boiling point of 352.209ºC at 760 mmHg, a density of 0.998g/cm3 and a flash point of 110ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 71310-21-9
- Jingsj CID
- J-23283-7
- Molecular Formula
- C11H22O2S
- Molecular Weight
- 218.35600 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 46-50ºC(lit.) |
|---|---|
| Boiling Point | 352.209ºC at 760 mmHg |
| Density | 0.998g/cm3 |
| Flash Point | 110ºC |
| Exact Mass | 218.13400 |
| PSA | 76.10000 |
| LogP | 3.51170 |
| Refractive Index | 1.483 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of 11-Mercaptoundecanoic acid?
The CAS number of 11-Mercaptoundecanoic acid is 71310-21-9.
What are the molecular formula and molecular weight of 11-Mercaptoundecanoic acid?
11-Mercaptoundecanoic acid has molecular formula C11H22O2S and molecular weight 218.35600 g/mol.
Is 11-Mercaptoundecanoic acid hazardous?
11-Mercaptoundecanoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 11-Mercaptoundecanoic acid?
For 11-Mercaptoundecanoic acid, Upstream Products: 11-Bromoundecanoic acid, 10-Undecenoic acid, 1,10-Undecadiene; Downstream Products: Bis(10-carboxydecyl) disulfide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "11-Mercaptoundecanoic acid (CAS 71310-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23283-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.