Dodecylbenzenesulfonic acid
- CAS NO.：121-65-3
- Empirical Formula: C18H30O3S
- Molecular Weight: 326.49
- MDL number: MFCD00066677
- EINECS: 204-489-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:54:11
What is Dodecylbenzenesulfonic acid?
Chemical properties
off-white powder
The Uses of Dodecylbenzenesulfonic acid
4-Dodecylbenzenesulfonic acid (p-dodecylbenzenesulfonic acid, DBSA) may be used:
- As a solvent for the synthesis of 2-(1,5-diaryl-1,4-pentadien-3-ylidene)-hydrazinecarboximidamide hydrochlorides.
- In situ coating of rutile nanoparticles.
- As a stabilizer in the preparation of colloidal CdS.
- In the fabrication of solid-state dye-sensitized solar cells (DSSCs).
Definition
ChEBI: 4-dodecylbenzenesulfonic acid is a member of the class dodecylbenzenesulfonic acids that is benzenesulfonic acid in which the hydrogen at position 4 of the phenyl ring is substituted by a dodecyl group.
General Description
4-Dodecylbenzenesulfonic acid (DBSA) is an alkyl sulfonate. It participates in the preparation of a polymer along with polystyrene-block-poly(4-vinylpyridine) and a comb-coil A-block-(B-graft-C) type of copolymer.
Properties of Dodecylbenzenesulfonic acid
| Boiling point: | 82 °C |
| Density | 1.06 g/mL at 20 °C (lit.) |
| refractive index | n |
| Flash point: | 85 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | water, alcohols, glycol ethers, glycols, esters, ketones, aromatic and aliphatic hydrocarbons: soluble |
| pka | -0.45±0.50(Predicted) |
| form | liquid |
| color | Clear, brown |
| BRN | 2217653 |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong bases. |
| EPA Substance Registry System | Benzenesulfonic acid, 4-dodecyl- (121-65-3) |
Safety information for Dodecylbenzenesulfonic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Dodecylbenzenesulfonic acid
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