4-Dodecylbenzenesulfonic acid
Also known as: DODECYLBENZENESULFONIC ACID, 4-dodecylbenzenesulfonic acid, mixture of isomers, 4-dodecylbenzene-1-sulfonic acid, 4-dodecylbenzenesulphonic acid, ALKYLARYLSULFONIC ACID, ALKYLBENZENESULFONIC ACID, Benzenesulfonic acid, 4-dodecyl-, N-DODECYLBENZENESULFONIC ACID, NAXEL AAS-98S, p-dodecylbenzenesulfonic acid, p-dodecylbenzenesulphonic acid
4-Dodecylbenzenesulfonic acid (CAS 121-65-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H30O3S and a molecular weight of 326.494 g/mol. Key properties include a boiling point of 82 °C, a density of 1.1±0.1 g/cm3 and a flash point of 29.4 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 121-65-3
- Jingsj CID
- J-1956837-7
- Molecular Formula
- C18H30O3S
- Molecular Weight
- 326.494 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 82 °C |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 29.4 °C |
| Exact Mass | 326.191559 |
| PSA | 62.75000 |
| LogP | 6.78 |
| Refractive Index | 1.510 |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
| Additional Property | water, alcohols, glycol ethers, glycols, esters, ketones, aromatic and aliphatic hydrocarbons: soluble |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2904100000 |
|---|---|
| Summary | 2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Dodecylbenzenesulfonic acid?
The CAS number of 4-Dodecylbenzenesulfonic acid is 121-65-3.
What are the molecular formula and molecular weight of 4-Dodecylbenzenesulfonic acid?
4-Dodecylbenzenesulfonic acid has molecular formula C18H30O3S and molecular weight 326.494 g/mol.
Is 4-Dodecylbenzenesulfonic acid hazardous?
4-Dodecylbenzenesulfonic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 4-Dodecylbenzenesulfonic acid?
For 4-Dodecylbenzenesulfonic acid, Upstream Products: Dodecylbenzene, Dodecanophenone; Downstream Products: 4-dodecylbenzenesulfonyl chloride, 1-dodecyl-4-iodobenzene.
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-Dodecylbenzenesulfonic acid (CAS 121-65-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956837-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.