Linear Alkylbenzene Sulphonic Acid (CAS 27176-87-0), chemically identified as dodecylbenzenesulfonic acid, is a viscous anionic surfactant precursor functioning as the core active ingredient in detergent powder production and liquid cleaning formulations. This brown viscous liquid, extensively technically recognized as LABSA or DDBSA, acts as a potent hydrophilic moiety that, upon neutralization, forms salts capable of removing oils and soils in laundry powders, dishwashing liquids, and industrial cleaners. We provide bulk supply of this high-active matter ingredient with competitive factory pricing to ensure cost-efficiency for detergent manufacturers. Our production capacity supports continuous demand, making MSDS, TDS, COA available alongside customized specifications to match color and acid value requirements.
Linear Alkylbenzene Sulphonic Acid CAS 27176-87-0
- CAS: 27176-87-0
- Synonyms: LABSA, Dodecylbenzenesulfonic acid, DDBSA, Alkylbenzene sulfonic acid, LABS acid
- Einecs: 248-289-4
- Molecular Formula: C18H30O3S
- Grade: industrial grade
- Package: 210 kg / 215 kg plastic drum, bulk or customized packing on request
Product Description
Sulphonic Acid (LABSA 96%) is a high-activity anionic surfactant widely used as a key raw material in household and industrial detergents. It offers strong cleaning, wetting, foaming and emulsifying performance, and is known for its good biodegradability, making it suitable for modern detergent and cleaning formulations.
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Physicochemical Properties
(typical reference values for industrial LABSA 96%)
| Item | Typical Value |
|---|---|
| Appearance (25 °C) | Brown to yellow viscous liquid |
| Active matter (as LABSA) | ≥ 96.0 % |
| Free oil | ≤ 2.0 % |
| Free inorganic acid (as H₂SO₄) | ≤ 1.5 % |
| Density (20–25 °C) | ~1.06 g/mL |
| Melting / pour point | Around 10 °C |
| pKa (20 °C) | ~0.7 |
| Solubility | Completely soluble in water; soluble in alcohols, glycol ethers and many organic solvents |
| Biodegradability | > 90 % |
Values are typical data for Chinese industrial LABSA 96% and may be adjusted according to your required specification.
Applications
Sulphonic Acid (LABSA 96%) is mainly used as:
- Detergent & Cleaning Raw Material
- Base surfactant for laundry powder, liquid detergents, dishwashing liquid and household cleaners.
- Provides high detergency, strong foaming and good soil removal on textiles and hard surfaces.
- Industrial & Institutional Cleaners
- Component of carpet and floor cleaners, heavy-duty degreasers, car wash liquids and workshop cleaners.
- Effective on oily and greasy contaminants in factories, workshops and garages.
- Textile & Leather Industry
- Used as a scouring, wetting and degreasing agent in textile pre-treatment to remove oils, waxes and sizing agents.
- Emulsifier and wetting agent for leather degreasing and finishing formulations.
- Paper & Pulp
- De-inking agent and emulsifier in recycling and paper processing formulations.
- Other Uses
- Surfactant component in agrochemical formulations (to improve wetting and spreading of active ingredients).
- Auxiliary surfactant in oilfield chemicals and various industrial emulsifier blends.
For OEM/ODM detergent projects, our technical team can help you design LABSA-based formulations for different markets and performance levels.
Storage Conditions
- Store in a cool, dry and well-ventilated warehouse, away from direct sunlight and heat sources.
- Recommended storage temperature: ambient to cool conditions; avoid long-term exposure to temperatures near or below its pour point to prevent solidification. For high-purity reference standards, 2–8 °C storage is typical.
- Keep containers tightly closed when not in use to avoid moisture uptake and contamination.
- Keep away from strong oxidizing agents, strong bases and reactive metals, as the product is strongly acidic and corrosive to many materials.
- Use acid-resistant tanks, lined drums or IBCs recommended by your engineering team for bulk storage.
Safety Precautions
Sulphonic Acid (LABSA) is a corrosive organic acid. Proper industrial handling procedures are required:
- Hazard characteristics
- Strong acid, causes severe skin burns and serious eye damage.
- Corrosive to many metals; reacts with bases and reactive metals with heat release.
- Personal protective equipment (PPE)
- Wear acid-resistant gloves, long-sleeve protective clothing and closed shoes.
- Use chemical splash goggles and/or face shield to protect eyes and face.
- In poorly ventilated areas or when handling large quantities, use suitable respiratory protection according to your plant EHS rules.
- Handling advice
- Avoid all contact with skin and eyes; do not breathe mist or vapors.
- Always add acid to water slowly when preparing dilutions, not the other way around.
- Provide local exhaust or general ventilation in filling and dosing areas
- First-aid (summary)
- Skin contact: Immediately remove contaminated clothing and rinse skin with plenty of water for at least 15 minutes; seek medical attention.
- Eye contact: Rinse cautiously with water for several minutes, holding eyelids open; remove contact lenses if easy, continue rinsing and get urgent medical help.
- Inhalation: Move the person to fresh air, keep warm and at rest; seek medical attention if symptoms persist.
- Ingestion: Rinse mouth, do NOT induce vomiting, and get immediate medical assistance.
FAQ - Technical & Supply Chain
-
Q:
What is Linear Alkylbenzene Sulphonic Acid CAS 27176-87-0?
A: It is an anionic surfactant intermediate, commonly called LABSA or DDBSA. Industrial detergent grades are supplied as a brown to yellow viscous liquid with typical active matter of about 96% and the molecular formula C18H30O3S. -
Q:
How is LABSA related to Sodium Dodecylbenzenesulfonate?
A: LABSA is the acidic intermediate. Neutralization with sodium hydroxide or another suitable base converts it into sodium alkylbenzene sulfonate, which is the anionic surfactant actually used in many laundry, dishwashing, and cleaning formulations. -
Q:
What are the main applications of LABSA?
A: It is used to manufacture laundry powders, liquid detergents, dishwashing liquids, household cleaners, industrial cleaners, emulsifiers, and textile auxiliaries. In most formulations it is first neutralized to the corresponding sulfonate salt. -
Q:
What specifications should be checked before ordering?
A: Confirm active matter, free oil or unsulfated matter, free sulfuric acid or inorganic acid, color, density, and flow properties. For detergent production, the alkyl chain distribution and neutralization behavior should also be matched to the final formulation. -
Q:
Why must LABSA be neutralized carefully?
A: Neutralization of LABSA with a base releases significant heat and can create highly alkaline or corrosive conditions if not controlled. The process should be carried out with cooling, agitation, and pH monitoring using suitable materials and equipment. -
Q:
How should LABSA be stored and handled?
A: Store in tightly closed, corrosion-resistant containers in a cool, dry, well-ventilated area away from moisture, alkalis, oxidizers, and heat sources. Use acid-resistant PPE and handle spills or splashes according to the supplied safety guidance.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
Send the CAS number, grade, quantity, packing preference and destination.
Sample & Supply
Support is available for samples, trial orders, bulk and repeat supply.
Storage & Shipping
Product-specific conditions are confirmed before order.
