AOS CAS 68439-57-6
CAS:68439-57-6;Sulfonic acids,Sodium alpha-olefin Sulfonate,C14-16-alkane hydroxy and C14-16-alkene,sodium salts,Alpha Olefin Sulphonate,Sodium C14-16 olefin sulfonate,AOS 95
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ORID products are tested extensively in-house and supplied worldwide to the Life Sciences industries.
The “Foam Machine” That Loves Hard Water
What Is AOS?
AOS stands for Alpha Olefin Sulfonate.
It’s another type of anionic surfactant.
But it has a special superpower.
It works great in hard water.
Wait, What’s Hard Water?
Let’s explain this first.
Hard water contains lots of minerals. Calcium. Magnesium.
You find hard water in many areas. Especially in northern China, Europe, and parts of the USA.
Why does hard water matter?
Most surfactants hate hard water.
The minerals react with the surfactant.
Result: Less foam. White residue. Poor cleaning.
Why AOS Is Special
AOS doesn’t care about hard water.
The minerals don’t bother it.
In hard water, AOS still makes rich foam.
This makes it perfect for certain products.
Where Is AOS Used?
Dishwashing liquid.
Especially in hard water regions.
Customers get good foam even with tap water full of minerals.
Shampoo.
AOS creates creamy, dense foam.
It feels luxurious in the shower.
Bubble bath products.
Kids love bubbles. Lots of bubbles.
AOS delivers.
Car wash products.
Car wash uses whatever water is available.
AOS performs consistently.
AOS vs. SLES: Quick Comparison
Feature | AOS | SLES |
Hard water performance | Excellent | Moderate |
Foam type | Dense, creamy | Light, airy |
Skin mildness | Good | Good |
Price | Higher | Lower |
Thickening with salt | Harder | Easier |
Simple summary:
SLES is the everyday choice. Cheap and reliable.
AOS is the upgrade for hard water areas or premium products.
The Challenge: AOS Is Harder to Thicken
Here’s something formulators struggle with.
SLES thickens easily. Just add salt.
AOS is stubborn. Salt alone doesn’t work well.
Solution:
Combine AOS with other ingredients.
CMEA (Coconut Monoethanolamide) helps a lot.
Or use a small amount of SLES together with AOS.
This is called “co-surfactant system.
Forms of AOS
Liquid (35-40% active):
Easy to pump and mix.
Good for large-scale production.
Powder (90%+ active):
Lower shipping cost per active unit.
Need to dissolve before use.
Watch out for dust, like with SLS powder.
Buying Tips
Check the active matter.
Liquid AOS: Look for 35% minimum.
Powder AOS: Look for 92% minimum.
Ask about the carbon chain.
AOS is usually C14-16 or C14-18.
C14-16 has better water solubility.
C14-18 has slightly better foam.
For most uses, C14-16 is fine.
Color check.
Good AOS liquid is light yellow to amber.
Very dark color may indicate impurities.
The Bottom Line
AOS is your secret weapon for hard water markets.
If your customers complain “your product doesn’t foam,” and they live in a hard water area, consider adding AOS.
It costs more than SLES.
But it solves a real problem that SLES can’t fix.
Performance and Applications
ORID products are tested extensively in-house and supplied worldwide to the Life Sciences industries.
α-alkenyl sodium sulfonate is a kind of anionic surfactant prepared from α-olefin by sulphonation and continuous neutralization of sulfur trioxide vapor film. AOS has excellent emulsification, decontamination and calcium soap dispersibility, solubility, compatibility, fine and rich foam, easy biodegradation, low toxicity, little irritation to the skin and other characteristics, especially when used in non-phosphorus detergent, not only can maintain a good washing ability, but also good compatibility with enzyme preparations. The fluidity of powder products is good. Therefore, it can be widely used in all kinds of household washing products such as phosphorus-free laundry powder, liquid detergent, textile printing and dyeing industry, petrochemical, industrial hard surface cleaning.
Storage and transportation package
AOS92% AOS93% of the product specifications (powder) using 20 kg, 25 kg lined plastic kraft paper bag packaging;
AOS35% AOS38%specifications using 200 kg, ton of plastic bucket packaging. Store in a cool, dry place to avoid the sun and rain.
Company Profile
The capabilities of a chemical company that possesses both production and research and development (R&D) capabilities include
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