Salt generated Viscosity: ph

Can Anyone tell me is viscosity based on the  ph of any solution? Sometimes when I  make handwash, I didn't get desired viscosity through salt.  So anyone can tell me required things to get  the viscosity by salt.

Comments

  • PharmaPharma Member, Pharmacist
    No, adding salt is not about changing pH (table salt doesn't even change pH).
    I assume you're living in a country not served by Google (or completely lack own initiative); so HERE you go.
  • A lot of things in handwash can effect viscosity including pH. So do some experiments. 
  • Pharma said:
    No, adding salt is not about changing pH (table salt doesn't even change pH).
    I assume you're living in a country not served by Google (or completely lack own initiative); so HERE you go.
    ๐Ÿ˜† I  am from the country where all advancement there but we can not googled our failures and success from there dear. Thanks for your help. My question is ph of solution to which I am going to  add salt, change the viscosity as sometimes I get viscosity and sometimes not with same ingredients. 
  • Abdullah said:
    A lot of things in handwash can effect viscosity including pH. So do some experiments. 
    @Abdullah thanks 
  • PharmaPharma Member, Pharmacist
    ๐Ÿ˜† I  am from the country where all advancement there but we can not googled our failures and success from there dear. Thanks for your help. My question is ph of solution to which I am going to  add salt, change the viscosity as sometimes I get viscosity and sometimes not with same ingredients. 
    In that case, read a book such as 'Surfactant Science, Principles & Practice' by Steven Abbott (free PDF download online available on his HP).
  • Can Anyone tell me is viscosity based on the  ph of any solution? Sometimes when I  make handwash, I didn't get desired viscosity through salt.  So anyone can tell me required things to get  the viscosity by salt.
    Can Anyone tell me is viscosity based on the  ph of any solution? Sometimes when I  make handwash, I didn't get desired viscosity through salt.  So anyone can tell me required things to get  the viscosity by salt.
    @drjayseesunish This is just an example, but if you have both SLES and CAPB, different pH will modify the way they interact with each other, thus modifying the resulting viscosity.
  • ketchito said:
    Can Anyone tell me is viscosity based on the  ph of any solution? Sometimes when I  make handwash, I didn't get desired viscosity through salt.  So anyone can tell me required things to get  the viscosity by salt.
    Can Anyone tell me is viscosity based on the  ph of any solution? Sometimes when I  make handwash, I didn't get desired viscosity through salt.  So anyone can tell me required things to get  the viscosity by salt.
    @drjayseesunish This is just an example, but if you have both SLES and CAPB, different pH will modify the way they interact with each other, thus modifying the resulting viscosity.
    @ketchito thanks 
  • Pharma said:
    ๐Ÿ˜† I  am from the country where all advancement there but we can not googled our failures and success from there dear. Thanks for your help. My question is ph of solution to which I am going to  add salt, change the viscosity as sometimes I get viscosity and sometimes not with same ingredients. 
    In that case, read a book such as 'Surfactant Science, Principles & Practice' by Steven Abbott (free PDF download online available on his HP).
    @Pharma thanks 
  • Abdullah said:
    A lot of things in handwash can effect viscosity including pH. So do some experiments. 
    @Abdullah when should we add EDTA in the solution, before neturalisation or after it? Any particular time or step? In detergent case. 
  • MarkBroussardMarkBroussard Member, Professional Chemist
    @drjayseesunish

    Viscosity can be affected by pH.  It's all a function of how the surfactants interact with each other, but you can get some increase in viscosity by lowering the pH of certain surfactant combinations.  i don't think there is a general rule in this regard.  You just need to test it.

    Viscosity by salt will only work with certain surfactants or sufactant combinations.  Non-Ionic surfactants will not salt thicken.  Whereas anionic taurates generally respond well to salt-thickening.  Again, as with pH, you need to experiment to see if you get thickening of a surfactant mixture by lowering the pH and/or adding salt.
    Chemist/Microbiologist formulating in the Organic & Naturals & Clean Beauty arena under ECOCert/Natural Products Assn/Whole Foods/National Organic Program/Clean At Sephora/Credo Clean guidelines focused skincare & haircare products. 

    See website for details www.desertinbloomcosmeticslab.com
  • Abdullah said:
    A lot of things in handwash can effect viscosity including pH. So do some experiments. 
    @Abdullah I have  found out when I add EDTA in the solution, solution becomes thinner so when should we add it in the solution? 
  • @drjayseesunish

    Viscosity can be affected by pH.  It's all a function of how the surfactants interact with each other, but you can get some increase in viscosity by lowering the pH of certain surfactant combinations.  i don't think there is a general rule in this regard.  You just need to test it.

    Viscosity by salt will only work with certain surfactants or sufactant combinations.  Non-Ionic surfactants will not salt thicken.  Whereas anionic taurates generally respond well to salt-thickening.  Again, as with pH, you need to experiment to see if you get thickening of a surfactant mixture by lowering the pH and/or adding salt.
    @MarkBroussard thanks a lot Mark. I am learning everytime when you all knowledge rich persons give the solution and the same time make us think in another aspect. 
  • Abdullah said:
    A lot of things in handwash can effect viscosity including pH. So do some experiments. 
    @Abdullah when should we add EDTA in the solution, before neturalisation or after it? Any particular time or step? In detergent case. 
    It is better to add EDTA earlier to solution
  • I believe (and this is what I do for my face and other lotion/Cream emulsions) is add it to the heated Water phase. My supplier advises " Useage:  0.1-0.4% is usually enough and it is added into the water phase as soon as manufacturing begins." So maybe check with your supplier and see what they suggest.
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