Home Cosmetic Science Talk Formulating Need Guidance for Liquid dishsoap

  • Need Guidance for Liquid dishsoap

    Posted by VP2020 on September 9, 2021 at 4:40 am

    I am trying to make economic Liquid dish wash using below ingredients, Can you please guide me wether this formula will work or not.

    SLS- 40 %
    Sodium carbonate- 20 %

    Sodium bi carbonate- 20%
    Sodium benzoate- 5%
    Citric acid-10%
    Salt-3%
    fragrance-2%
    VP2020 replied 3 years, 2 months ago 5 Members · 7 Replies
  • 7 Replies
  • ozgirl

    Member
    September 9, 2021 at 5:55 am
  • VP2020

    Member
    September 9, 2021 at 6:48 am

    Sorry missed to mention SLS is a Solution and NaCl is used to thicken it.. 

  • Abdullah

    Member
    September 9, 2021 at 8:58 am

    Do you know why are you using these ingredients and how much should each of them be used?

  • VP2020

    Member
    September 9, 2021 at 10:52 am

    @Abdullah yes i know,can you suggest what can be added further.. aim is to avoid parabens and VOCs

  • ketchito

    Member
    September 9, 2021 at 11:49 am

    @VP2020 As @ozgirl mentioned, it’s better if you use reference formulas from known sources, so you dont’s miss many important ingredients in your formula, or overdose some others. For instance, carbonates are way too high (not sure if they’ll ever get to fully dissolve), and there are better ways to sequester metallic ions (carbonates will form precipitates with divalent ions, and form incrustations on fabrics, and lime in your pipes; rather, use chelants like EDTA, NTA, HEDP, etc. which will form soluble complexes). Also, SLS is too expensive (and sensitive to water hardness) to be used in a liquid detergent; usually, LABS or LABS-SLES are used. The amount of Benzoate is also way too high, and might not be suitable for a product that usually have enzymes, that require an almost neutral pH. Again, it’d be better if you start with a formula already in the literature, as a starting point.

  • PhilGeis

    Member
    September 9, 2021 at 2:16 pm

    Liquid dish soap is typically alkaline in pH and benzoate alone even at favorable pH by itself is a poor preservative .  These products are typically preserved.
    Consider Benzyl or Methyl isothiazolinone 

  • VP2020

    Member
    September 10, 2021 at 2:32 pm

    @PhilGeis thanks for suggestion. Will be trying Benzyl .. But can you confirm that my formula would actually work is there any else i need to add

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