2-dodecylbenzenesulfonic acid
C18H30O3S
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Identification
- CAS Number
- 27176-87-0
- EC Number
- 248-289-4
- UN Number
- 2586
- PubChem CID
- 25457
Physical-chemical properties
- Molecular Formula
- C18H30O3S
- Molar Mass
- 326.50 g/mol
- IUPAC Name
- 2-dodecylbenzenesulfonic acid
Chemical Identifiers
- InChI
- InChI=1S/C18H30O3S/c1-2-3-4-5-6-7-8-9-10-11-14-17-15-12-13-16-18(17)22(19,20)21/h12-13,15-16H,2-11,14H2,1H3,(H,19,20,21)
- InChI Key
- WBIQQQGBSDOWNP-UHFFFAOYSA-N
Overview
2-Dodecylbenzenesulfonic acid (CAS 27176-87-0) is an aromatic sulfonic acid featuring a twelve-carbon alkyl chain attached to a benzenesulfonic acid core structure. This specialized sulfonic acid derivative represents an important class of organic compounds widely utilized in industrial applications requiring both hydrophobic and hydrophilic properties. The molecule combines the acidic functionality of the sulfonic acid group with the extended dodecyl chain, creating unique surface-active characteristics that make it valuable in various chemical processes. With a molecular formula of C18H30O3S and molecular weight of 326.5 g/mol, this compound exhibits distinct physicochemical properties that differentiate it from simpler aromatic compounds. The compound's structure provides excellent stability under normal storage conditions, though proper handling protocols should be observed given its classification under ADR Class 8. Unlike more reactive aromatic derivatives such as 4-methoxybenzoyl chloride or benzene-1,4-dicarbonyl chloride, 2-dodecylbenzenesulfonic acid offers enhanced stability while maintaining functional versatility. Primary industrial applications include its use as a surfactant intermediate in detergent formulations, where the long alkyl chain provides superior cleaning properties. The compound also serves as an effective catalyst in polymerization reactions and finds application in specialty chemical synthesis where controlled surface tension modification is required. Additionally, it functions as a processing aid in various industrial formulations requiring emulsification or dispersion capabilities. OYSI maintains reliable supply chains for 2-dodecylbenzenesulfonic acid, ensuring consistent availability for European industrial customers requiring this specialized aromatic sulfonic acid derivative.
Safety & Classification
No Hazard Classification
This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.
Transport (ADR)
| UN Number | 2586 |
| ADR Class | 8 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | Dodecylbenzensulfonsäure, freie Schwefelsäure <= 5 % |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-dodecylbenzenesulfonic acid?
2-dodecylbenzenesulfonic acid is an anionic surfactant belonging to the linear alkylbenzene sulfonic acid family. This organic compound features a benzene ring substituted with a dodecyl chain and a sulfonic acid group, giving it amphiphilic properties. With the molecular formula C18H30O3S and CAS number 27176-87-0, it has a molecular weight of 326.5 g/mol. This surfactant is widely used in industrial applications due to its excellent cleaning and emulsifying properties.
What are the physicochemical properties of 2-dodecylbenzenesulfonic acid?
2-dodecylbenzenesulfonic acid typically appears as a viscous liquid or paste at room temperature, ranging from colorless to light brown. It has a characteristic mild odor and is highly soluble in water due to its sulfonic acid group. The compound exhibits strong surface-active properties, reducing surface tension effectively. Its long alkyl chain provides good detergency, while the sulfonic acid group ensures excellent water solubility and ionic character in aqueous solutions.
What is 2-dodecylbenzenesulfonic acid used for?
2-dodecylbenzenesulfonic acid serves primarily as a key intermediate in surfactant production for detergent manufacturing. It is used to produce household and industrial cleaning products, liquid detergents, and dishwashing formulations. The compound also finds applications in textile processing, leather treatment, and as an emulsifier in various industrial processes. Its excellent cleaning properties make it valuable in metalworking fluids, degreasers, and specialty cleaning formulations across multiple industries.
How to handle 2-dodecylbenzenesulfonic acid safely?
2-dodecylbenzenesulfonic acid should be handled using appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas to avoid inhalation of vapors. Avoid direct skin and eye contact as the compound may cause irritation. Use proper handling techniques to prevent spills and splashes. Ensure emergency eyewash stations and safety showers are accessible. Follow good industrial hygiene practices and wash hands thoroughly after handling.
How to store 2-dodecylbenzenesulfonic acid correctly?
2-dodecylbenzenesulfonic acid should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight. Keep containers at ambient temperature to maintain product stability. Store away from strong bases, oxidizing agents, and incompatible materials. Ensure storage areas are equipped with appropriate spill containment measures. Use corrosion-resistant containers and regularly inspect for leaks or damage. Maintain proper inventory rotation using first-in-first-out principles.
What to do in case of contact with 2-dodecylbenzenesulfonic acid?
Skin contact with 2-dodecylbenzenesulfonic acid requires immediate removal of contaminated clothing and thorough washing with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes and seek medical attention. If inhaled, move to fresh air and seek medical advice if respiratory irritation occurs. In case of ingestion, rinse mouth and drink water, but do not induce vomiting. Always consult a physician if symptoms persist or worsen.
How to dispose of 2-dodecylbenzenesulfonic acid properly?
2-dodecylbenzenesulfonic acid disposal must comply with local and national environmental regulations. The compound should be treated as industrial chemical waste and disposed of through licensed waste management facilities. Do not discharge into sewers, waterways, or soil without proper treatment. Small quantities may be neutralized and treated according to local wastewater treatment guidelines. Always consult local authorities and waste management professionals to ensure compliant disposal methods are followed.
How to transport 2-dodecylbenzenesulfonic acid?
2-dodecylbenzenesulfonic acid is classified as ADR Class 8 (Corrosive substances) Packing Group III for transportation purposes. It requires appropriate packaging specifications according to ADR regulations for corrosive materials. Use UN-approved containers and ensure proper labeling with hazard identification numbers. Transport vehicles must comply with ADR requirements including appropriate documentation, emergency procedures, and driver training. Shipping papers must include proper shipping names and emergency response information.
Is 2-dodecylbenzenesulfonic acid subject to specific regulations?
2-dodecylbenzenesulfonic acid is subject to REACH regulation requiring registration for commercial use in the European Union. It falls under standard chemical classification and labeling regulations (CLP). The substance is not identified as a Substance of Very High Concern (SVHC) under REACH. Manufacturers and importers must comply with standard chemical safety requirements, including safety data sheet provision and exposure scenario development where applicable. Local environmental and occupational safety regulations may also apply.
Where to buy 2-dodecylbenzenesulfonic acid in Europe?
2-dodecylbenzenesulfonic acid is available through OYSI, a reliable European distributor of specialty chemicals serving industrial customers across the continent. OYSI provides high-quality chemical products with comprehensive technical support and regulatory compliance documentation. As an established chemical distributor, OYSI offers professional service including product specifications, safety data sheets, and logistics support. Contact OYSI directly for availability, technical specifications, and pricing information for your specific application requirements.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.