The foam and grease-cutting power printed on a bottle of dishwashing liquid come down to a single raw material: LABSA. Yet the most common misunderstanding we see in the field is treating LABSA as if it were the detergent itself. Straight out of the drum, LABSA is a corrosive acid with a pH of 1-2, and it does nothing useful until it is neutralized. This guide explains, from a supplier's perspective, what LABSA is, how caustic soda turns it into LAS, and the dosages that make it the backbone of detergent formulation.
What Is LABSA? A Short, Precise Definition
LABSA stands for Linear Alkylbenzene Sulfonic Acid, and it is the single most important anionic surfactant raw material in the detergent and cleaning industry. Carrying CAS number 27176-87-0, it is sold on the market predominantly as a viscous, dark-brown liquid containing 96% active matter.
Chemically, LABSA is produced by sulfonating linear alkylbenzene (LAB) with sulfur trioxide (SO₃). The result is a strong organic acid. That acidic nature is exactly why LABSA cannot be used directly: before it enters any formulation, it must be neutralized.
LABSA's dominance in the industry is no accident. Compared with other surfactants:
- It offers the best cost-to-performance ratio of any anionic surfactant.
- Its grease and soil-removal capacity is very high.
- It produces abundant, stable foam.
- It is readily biodegradable — its linear structure is environmentally superior to the older branched-chain ABS it replaced.
If you want the fundamentals of how surfactants work and how they are classified, our what are surfactants article lays the groundwork; here we focus directly on LABSA and its role in detergent manufacturing.
What Does "Anionic" Mean, and Why Does It Matter?
Surfactants are grouped by charge into four families: anionic, cationic, nonionic, and amphoteric. The LAS obtained from LABSA belongs to the anionic group — meaning that when it dissolves in water, the active end of the molecule carries a negative (-) charge.
Anionic surfactants are known for rich foam and strong soil lift. That is precisely why they serve as the backbone of dishwashing liquid, laundry detergent, shampoo, and general-purpose cleaners. The one weakness of anionic chemistry is sensitivity to hard water (calcium and magnesium ions), which is why formulations usually reinforce it with sequestrants (EDTA, sodium citrate) and nonionic surfactants.
The Chemistry of LABSA: The Journey from LAB to LAS
To understand LABSA you have to separate three abbreviations that are frequently confused on the shop floor:
| Abbreviation | Full Name | What It Is | Physical State |
|---|---|---|---|
| LAB | Linear Alkylbenzene | The feedstock for LABSA (unsulfonated) | Clear liquid |
| LABSA | Linear Alkylbenzene Sulfonic Acid | The sulfonated acid form, CAS 27176-87-0 | Viscous, dark, acidic liquid |
| LAS | Linear Alkylbenzene Sulfonate | The neutralized salt of LABSA | The active surfactant in the detergent |
The chain runs like this: LAB → (sulfonation) → LABSA → (neutralization) → LAS. The substance that actually cleans in the detergent is LAS. LABSA is the acidic intermediate needed to make it. Grasping this distinction prevents most formulation errors before a product even reaches the mixing tank.
Typical LABSA 96% Specifications
Below are the typical value ranges you will see on the Certificate of Analysis (COA) when you source LABSA. These are reference figures for the commercial 96% grade that is widely accepted worldwide; for exact values, always defer to the batch-specific COA.
| Parameter | Typical Value / Range | Notes |
|---|---|---|
| Active matter (sulfonic acid) | 96% min. | Surfactant content |
| Free sulfuric acid | 1.5% max. | Residual reaction acid |
| Free oil (unsulfonated matter) | 2% max. | Unsulfonated residue |
| Color (Klett, 5% solution) | 50 max. | Lighter color = higher quality |
| Appearance | Viscous brown liquid | At 25°C |
| Molecular weight (avg.) | ~320-340 g/mol | Depends on chain length |
| pH (1% solution) | ~1-2 | Strongly acidic |
The Klett color value is the fastest field indicator of quality; a dark color usually signals excessive or faulty sulfonation and can cause unwanted yellowing in the finished product. For export buyers, color stability matters even more, because product may sit in transit and warehousing for weeks before it reaches the blending line.
Neutralization: The Step That Makes LABSA Usable
LABSA cannot go directly into a formulation because its acidic nature both irritates skin and is incompatible with other ingredients. The process of reacting this acid with a base to convert it into a salt is called neutralization. Neutralization is the heart of detergent production with LABSA, and when done correctly it determines the success of the product.
The two most common neutralizing agents are:
- Caustic soda (sodium hydroxide, NaOH): The most common choice. The resulting product is sodium LAS, ideal for clear, bright liquid detergents. The differences between flake, pearl/granular, and 50% liquid caustic soda affect how you dose the reaction; liquid NaOH is generally preferred for neutralization because it is easier to meter under control. See our detergent and cleaning chemicals guide for how these building blocks fit together.
- Soda ash (sodium carbonate, Na₂CO₃): Used especially in powder detergent production. The reaction releases CO₂, so dosing must be slower and more controlled.
The simplified reaction is:
LABSA (acid) + NaOH → LAS (sodium salt) + Water
The Critical Point in Neutralization: pH Control
The success of neutralization comes down to hitting the target pH range. For liquid detergents the target is usually the pH 7-8 band. The two mistakes we see most often are:
- Under-neutralization (pH < 6): Free acid remains in the product. The result: corrosion of packaging (especially metal caps and pumps), skin irritation, and shortened shelf life.
- Over-neutralization (pH > 9): Excess base remains. The result: a slippery/drying feel on skin, odor problems, and degradation of certain additives.
For this reason, neutralization is performed step by step, under continuous agitation, and monitored with a pH meter. The reaction is exothermic (it releases heat); if temperature is not controlled, the risk of color darkening and degradation rises. In practice, the goal is to keep the reaction temperature below 55°C.
LABSA and Co-Ingredients in Detergent Formulation
LABSA (once neutralized to LAS) is the backbone of a detergent, but it is not sufficient on its own. To build an effective, balanced product, it is formulated together with other raw materials. The table below shows the role each component plays in a typical hand dishwashing liquid:
| Component | Typical Ratio (w/w) | Role in the Formulation |
|---|---|---|
| LABSA 96% | 10-18% | Primary anionic surfactant; cleaning and foam backbone |
| Caustic soda (NaOH) | q.s. for neutralization | Converts LABSA to LAS; pH adjustment |
| SLES (sodium lauryl ether sulfate) | 3-8% | Secondary surfactant; foam stability and mildness |
| Cocamidopropyl betaine (CAPB) | 2-4% | Amphoteric; foam quality and skin compatibility |
| Salt (NaCl) | 1-3% | Viscosity adjustment (thickening) |
| Sequestrant (EDTA/citrate) | 0.1-0.5% | Binds hard-water ions |
| Preservative, fragrance, color | q.s. | Shelf life and aesthetics |
| Water | Balance | Carrier phase |
If you want to understand how SLES complements LABSA and balances foam against mildness, you can find the details in our surfactants and cleaning chemicals product category. For a broader view of which raw-material combinations go into different cleaning products, our detergent and cleaning chemicals guide is a good starting point.
LABSA Dosage by Product Type
The LABSA ratio changes markedly with the type of product being made:
- Hand dishwashing liquid: 10-18% LABSA. The heaviest use is here, because high foam and grease-cutting are expected.
- Liquid laundry detergent: 8-15% LABSA, usually reinforced with nonionic surfactants.
- Powder detergent: 6-12% LAS (usually neutralized with soda ash), together with other builders.
- Surface / general-purpose cleaners: 3-8% LABSA — less in applications where low foam is desired.
- Industrial / car wash: varies from 5-15% depending on the application.
These ratios are starting points. The final formula requires fine-tuning in the lab according to the target viscosity, foam profile, cost objective, and local water hardness.
LABSA Handling, Storage, and Safety
Because LABSA is a corrosive acid, its handling must be taken seriously. Most of the problems we see in the field are the result of poor handling, not the chemistry itself.
Physical properties to watch:
- High viscosity: LABSA is a dark liquid with low flowability, and it thickens considerably in the cold. Acid-resistant, high-viscosity pumps are used for transfer; keeping the product in a warm space in winter makes transfer easier. This matters for export shipments arriving in cold-climate ports — allow drums or IBCs to warm before decanting.
- Acidic and corrosive: It corrodes metal surfaces, especially mild steel and aluminum. For storage, prefer stainless steel (316), high-density polyethylene (HDPE), or acid-resistant tanks and containers.
- Sensitivity to heat and light: Prolonged sunlight and heat cause color darkening. Store in a cool, shaded, well-ventilated area.
Personal safety:
- Acid-resistant gloves, goggles/face shield, and an apron must be worn.
- On skin/eye contact, rinse with plenty of water and follow the relevant MSDS instructions.
- The neutralization reaction releases heat; on large batches, cooling and controlled addition are essential.
Correct classification and labeling of chemicals is critical for every facility and for cross-border shipment, since GHS/CLP hazard pictograms and H/P statements must travel with the goods. For corrosive products like LABSA, ask us directly about suitable packaging and bulk (IBC/drum) options, and we will align documentation to your destination country's requirements.
Packaging and Supply Formats
At industrial scale, LABSA is typically supplied in the following formats:
| Packaging | Approx. Capacity | Suited To |
|---|---|---|
| Jerrycan | 30 kg | Small-scale producer, trials |
| Drum | 220-230 kg | Mid-scale production |
| IBC tank | 1,100-1,200 kg | Continuous production, bulk |
| Bulk (tanker) | On request | Large-scale industry |
Choosing the right packaging matters for both your production speed and your unit cost. If you run continuous production, IBC or bulk supply lowers the unit cost noticeably. For export orders, packaging choice also drives freight efficiency — full-container loads of IBCs or drums move at a very different cost per kilogram than mixed pallets.
Factors That Determine the Price of LABSA
The price of LABSA is not fixed; it fluctuates with the petrochemical chain. The main factors that affect it are:
- Feedstock (LAB) cost: Tied to crude oil and benzene/kerosene derivatives.
- Sulfur/SO₃ and energy prices: Inputs to the sulfonation process.
- Exchange rate and freight: Because import content and international logistics weigh on the landed cost, LABSA pricing is sensitive to currency moves and shipping rates.
- Order volume and packaging: Buying bulk/IBC lowers the unit cost compared with jerrycans.
- Active matter content: The 96% grade delivers more surfactant per kilogram than lower-active grades, so a true cost comparison should be made on an active-matter basis.
This is why "how much does LABSA cost?" has no single answer. For a realistic landed cost, the right approach is to request a quote based on current market conditions, order quantity, packaging, and Incoterms. Why working with a reliable supplier is about far more than price — and why continuity and technical support matter so much — is something we cover in detail in our how to choose a chemical supplier article.
What to Look for When Choosing a LABSA Supplier
In detergent manufacturing, the quality of LABSA is reflected directly in the color, foam, and shelf life of the finished product. When selecting the right supplier — especially for cross-border sourcing — watch these points:
- Are the COA and MSDS provided? Request a certificate of analysis for every batch showing active matter, free acid, and color values.
- Color stability: Light-colored, stable LABSA will not cause yellowing in the finished product, even after long transit times.
- Supply continuity: To keep your production line from stopping, stock depth and reliable logistics are critical — more so when goods cross borders.
- Technical support: A good supplier stands beside you on formulation and neutralization questions.
- Packaging flexibility: They should be able to offer the right option for your need, from jerrycans to bulk, and handle export documentation.
- Documentation and Incoterms: For international buyers, clear COA/MSDS paperwork, HS codes, and agreed Incoterms (EXW, FOB, CIF) keep customs clearance smooth.
As YÜKSEK KİMYA, from our base in Kestel, Bursa, Turkey, we supply surfactants and cleaning chemicals to the automotive, textile, packaging, detergent/cleaning, paint & coating, and cosmetics sectors. With our quality approach under ISO 9001, ISO 14001, ISO 45001, and GHP, we provide COA and MSDS support with every batch.
Request a Quote or Sample
For supply, packaging, and pricing details on LABSA 96%, SLES, and the other surfactants and cleaning chemicals your detergent formulation needs, get in touch with us. You can browse our range in the surfactants and cleaning chemicals category, and send your request for a tailored quote, MSDS, and COA through our contact page. Our team supports you technically on the right dosage, neutralization, and packaging — and on export documentation and Incoterms for international orders.
Phone: +90 224 326 27 50 · Email: info@yuksekkimya.com
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Frequently Asked Questions
Can LABSA be used as a detergent on its own?
No. LABSA is a strong acid (pH ~1-2) and cannot be applied to skin or surfaces before neutralization. It is neutralized with caustic soda or soda ash to form the LAS salt, and that salt is the actual anionic surfactant that does the cleaning.
What is the difference between LABSA 96% and 90%?
The figure represents the active matter content. LABSA 96% is higher in purity and delivers more surfactant per kilogram, so a formulation reaches the same foam and cleaning performance with less raw material. LABSA 96% is the commercial standard traded internationally.
How much LABSA goes into one tonne of liquid dishwash?
It depends on the formulation, but a typical hand dishwashing liquid uses LABSA at 10-18% by weight. That is roughly 100-180 kg per tonne of finished product; the exact ratio depends on the target active matter and viscosity you want.
How is LABSA stored and shipped for export?
LABSA is a viscous, dark-brown, corrosive liquid. Store it in stainless steel, HDPE, or acid-resistant containers away from direct sunlight. For export it ships in drums or IBCs; request the COA and MSDS with each batch and confirm Incoterms and packaging before booking.