Is sodium silicate better than STPP in laundry detergent according to this chart

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Is sodium silicate better than STPP in laundry detergent according to this chart

Posted by Abdullah on February 6, 2023 at 9:50 pm
According to this chart, sodium silicate is better than STPP in everything they do in a detergent . Is this correct?

If it is correct, is it necessary to add stpp in liquid or powder laundry detergent if it already has sodium silicate?
- This discussion was modified 1 year, 2 months ago by Perry44.
Abdullah replied 10 months, 1 week ago 3 Members · 10 Replies
- detergent
- laundry detergent
10 Replies

Abdullah

Member
February 6, 2023 at 9:51 pm
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ketchito

Member
February 7, 2023 at 11:23 am

Is that chart from a supplier? I’d search for a more independent sourse. STPP outperforms silicates in many of those attributes, and that’s why it was the most used water-softner ingredient, which also gave antirredeposition properties, soil suspension, anti-incrustation and alkalinity source to formulas. You can find that info in SEPAWA congresses and from CRC Publishing books on the matter.
Abdullah

Member
February 8, 2023 at 1:07 am

<div>No it wasn’t from a supplier</div>

http://surfactantschemistry.blogspot.com/2013/07/laundry-detergents-formulation.html?m=1
ketchito

Member
February 8, 2023 at 8:43 am
Check “Handbook of detergents part A: Properties”, that’s a better source of information and very detailed. The section about builders is mesmerizing. Here are some extracts from the book.
- This reply was modified 1 year, 2 months ago by ketchito.
Abdullah

Member
February 10, 2023 at 7:59 pm

Thank a lot.
PhilGeis

Member
June 20, 2023 at 5:17 am

As ketchito noted - the target of a builder is chelation not the functions offered in the chart you posted.

A Bacillus sp. has been the source of enzymes used in liquid detergents.
PhilGeis

Member
June 20, 2023 at 6:34 am
It’s worth nothing that phosphates have generally been banned in laundry detergents.
- This reply was modified 10 months, 1 week ago by PhilGeis.
- Abdullah
  
  Member
  June 20, 2023 at 11:32 am
  
  Here water is very hard. TDS is 700-1200. No matter how much chelating agent i use, i cant make all those hard water soft according to my calculations.
  
  Currently i am working on liquid laundry detergent product to make it good enough to be competitive.
  
  This is my current formula
  
  SLS powder 6% active
  
  CAPB 1.5% active
  
  Stpp 6%
  
  Sodium silicate liquid 2.4:1 6%
  
  Water
  
  What are your suggestions to improve this product
  
  Wash water is very hard
PhilGeis

Member
June 21, 2023 at 6:43 am

Look at back issues of Happi https://www.happi.com/

Also consider Zeolite and do add a preservative.
- Abdullah
  
  Member
  June 21, 2023 at 9:20 pm
  
  pH is already 11-12. Do you think i need preservative? I prefer to increase the pH even more if it is necessary to be self preserving.
  
  Here we have no problem in using stpp and sodium silicate and these two are available locally.
  
  Zeolite i have to import from another country.
  
  Does Zeolite have any advantage over stpp or sodium silicate?