Product: Sodium Linear-Alkylbenzene Sulfonate (LAS, Na-LAS)
CAS‑No.: 42615-29-2
EC/EINECS‑No.: 203‑326‑3
INCI Name: Sodium Dodecylbenzene Sulfonate
Ionic type: Anionic surfactant1. Product Information
- Chemical Name: Benzenesulfonic acid, C10‑C13‑alkyl‑, sodium salt
- Synonyms: LAS, Sodium linear alkylbenzene sulphonate, Linear alkyl benzene sulfonate, Na‑LAS
- Molecular Formula: C18H29NaO3S
- Molecular Weight: 348.48 g/mol
- Description: Sodium salt of linear alkylbenzene sulfonic acid (LABSA). Mixed alkyl chain C10‑C13. One of the most cost‑effective bulk anionic surfactants; good detergency, foaming, wetting and dispersing performance; readily biodegradable. Commercial forms: aqueous solution, powder / flake.
2. Chemical‑Physical Properties
Appearance @25 °C 40% liquid: Yellow‑brown clear liquidPowder: Off‑white to pale yellow flake / powder
Odour Mild characteristic surfactant odour
Solubility Freely soluble in water
pH (1 % aqueous solution) 7.0‑9.0
Density (25 °C, 40 % solution) 1.08‑1.12 g/cm³
Stability Stable under neutral‑alkaline conditions; avoid strong acid; compatible with anionic & non‑ionic surfactants
Biodegradability Readily biodegradable
3. Quality Specification (Industrial‑Grade Typical)
| Test Item | LAS‑40 (Liquid) | LAS‑90 (Powder/Flake) |
|---|---|---|
| Active substance, wt% | 39.0‑41.0 | ≥ 88.0 |
| Sodium sulfate, wt% | ≤ 2.0 | ≤ 5.0 |
| Unsulfonated oil, wt% | ≤ 1.0 | ≤ 2.0 |
| pH (1 % solution) | 7.0‑9.0 | 7.0‑9.0 |
| Colour (Klett) | ≤ 100 | Light yellow |
4. Application & Use
Household detergent industry (major)
Core raw material for laundry powder, liquid laundry detergent, dish‑washing detergent, multi‑purpose household cleaners. Excellent removal of oily soil, cost‑efficient main‑stream surfactant.
Textile industry
Scouring agent, wetting agent, emulsifier for textile pretreatment processes.
Industrial cleaning
Hard‑surface cleaner, metal degreasing agent, leather processing auxiliaries.
Other fields
Emulsifier and dispersant for agrochemical formulations; papermaking de‑inking agent.Formulation note: Under strong acidic long‑term conditions, may hydrolyse; keep formulation pH neutral‑alkaline for best performance.
5. Packing
- LAS‑40 liquid: 200 kg HDPE drum; 1000 L IBC tote; ISO‑tank bulk
- LAS‑90 powder / flake: 25 kg woven bag with inner PE liner
6. Transportation and Storage
Transportation
- Not classified as dangerous goods.- Avoid direct sunlight, high temperature and container mechanical damage. Prevent leakage. Keep separate from strong acids.
Storage
- Store in cool, dry, well‑ventilated warehouse; storage temperature: 10‑35 °C.- Liquid grade: Keep drums tightly closed.
- Powder grade: Seal well to prevent moisture absorption and caking.
- Shelf‑life: 24 months under original sealed proper storage.
- After opening, seal tightly and consume promptly.
Disclaimer: This TDS provides typical reference data only. It shall not replace official SDS and batch‑wise COA.
chemical.tnj
+8618949823763
tnjchem
2881500864