Product: Sodium C14‑16 Olefin Sulfonate (AOS)
CAS‑No.: 68439‑57‑6
EC/EINECS‑No.: 270‑407‑8
INCI Name: Sodium C14‑16 Olefin Sulfonate
Ionic type: Anionic surfactant1. Product Information
- Chemical Name: Sulfonic acids, C14‑16‑alkane hydroxy and C14‑16‑alkene, sodium salts
- Synonyms: Alpha‑Olefin Sulfonate, AOS, Sodium α‑olefin sulfonate
- Description: Mixture of alkene‑sulfonate and hydroxy‑alkane‑sulfonate sodium salts, produced by sulfonation of C14‑C16 alpha‑olefins. Available in 35 % aqueous liquid and 92 % powder / needle forms in commercial market.
- General formula: R‑CH=CH‑(CH2)nSO3Na+R‑CH(OH)‑(CH2)n‑SO3Na (R=C14‑C16 alkyl chain)
2. Chemical‑Physical Properties
Appearance @25 °C : 35% grade: Pale yellow clear liquid; 92% grade: White / pale yellow powder / needles
Odour: Mild characteristic sulfonate odour
Solubility: Freely soluble in water
pH (1 % aqueous solution): 7.0‑9.0
Stability: Good alkali‑resistance; compatible with anionic, non‑ionic surfactants; avoid strong acid
Biodegradability: Readily biodegradable
Hard‑water tolerance: Excellent calcium‑soap dispersing power3. Quality Specification (Typical Industrial Grade)
| Test Item | AOS‑35 (Liquid) | AOS‑92 (Powder) |
|---|---|---|
| Active substance, wt% | 34.0‑36.0 | 90.0‑94.0 |
| Free oil (petroleum ether soluble), wt% | ≤ 1.5 | ≤ 3.0 |
| Inorganic sulfate (Na₂SO₄), wt% | ≤ 1.5 | ≤ 5.0 |
| Free alkali (as NaOH), wt% | ≤ 0.3 | ≤ 1.0 |
| Moisture (KF), wt% | — | ≤ 3.0 |
| Colour (APHA) | ≤ 200 | Light yellow |
4. Application & Use
Household detergents
Raw material for laundry powder/liquid detergent, phosphate‑free detergent, dish‑washing detergent; rich stable foam, good detergency under hard‑water conditions, compatible with enzymes.
Personal-care & cosmetics
Mild foaming agent for shampoo, body wash, hand‑washing liquid, bubble bath; low skin irritation, fine foam texture.
Textile industry
Wetting agent, scouring agent, emulsifier for textile pretreatment processes.
Other industrial fields
Industrial hard‑surface cleaners, oil‑field chemical auxiliaries, pesticide formulation adjuvants, fire‑fighting foam agent raw material.5. Packing
- AOS‑35 liquid: 200 kg net HDPE drum; IBC tank
- AOS‑92 powder: 25 kg net woven bag with inner PE liner
- Small packing: 25 kg, 5 kg, 1 kg available upon request.6. Transportation and Storage
Transportation
- Not classified as dangerous goods.- Protect containers from mechanical damage, direct sunlight and high temperature. 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; avoid long‑term high‑temperature storage.
- Powder grade: Keep sealed, prevent moisture absorption and caking.
- Shelf‑life: 12 months under original sealed condition.
- After opening, seal tightly and use promptly.Disclaimer: This TDS provides typical reference data only. It shall not replace official SDS and batch‑wise COA.
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