How increased shelf life of Dishwash Liquid

edited May 2018 in Formulating
How do you increase the shelf life of Dishwash liquid? 


  • Chemist77Chemist77 Member, PCF student
    Be leaving it in Arctic conditions. You need to elaborate more the term shelf life. 
  • BelassiBelassi Member, PCF student
    You need my magic ingredient, Shelflife GLS. I can sell you some but it's pricey.
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • Thanks for reply 
  • PerryPerry Administrator, Professional Chemist
    If you want some serious answers, you need to describe your problem in more detail. 

    What specifically does "more shelf life" mean? How much more?

    What is your current formula? Without knowing your formula there are no answers that can be reasonably given.
  • Hi Perry.
    Thanks sir for reply. 
    my formula for manual Dishwash liquid is.
    4.soda ash. 02%
    5.coco Betain.1%
    6.Castic soda. .012%
    9.scent 1gm
    So how much they have shelf life above ingredients?

    I need 3 years shelf life for my product can 
    you help to bring more shelf life.

  • ozgirlozgirl Member, PCF student
    You will need to add a preservative and then perform a product stability test. You can perform accelerated product stability tests at higher temperatures to get an indication of shelf life.

    Isothiazolinone preservatives are often used in dishwashing liquids. Ask your suppliers what they recommend based on your product type and pH.

    All of your ingredients have long shelf lives but once you mix them together it doesn't matter because they have been diluted.
  • em88em88 Member
    lol @Chemist77 and @Belassi, it is good to start the day with a laugh  :D

    @AFRIDI85, Why are you adding urea? It is usually unstable in water solution. 
    Also those ingredients given in grams, when the rest of the formula is in percentage, do not make much sense. 
    To fix a formula you have to know what is/are the issue(s) and this is done by making stability tests. 
  • Thanks a lot @ozgirl and @em88 for suggestion and helping in formulation.

    my Dishwash wash liquid viscosity is better but how can improve more viscosity and quilty.?
  • PerryPerry Administrator, Professional Chemist
  • Thanks you sir @Perry for suggestion. 
  • Chemist77Chemist77 Member, PCF student
    @AFRIDI85 Where are you located, @ozgirl good suggestion on Kathon CG but might get costly for home care. Instead glutaraldehyde from Dow again is the go to preservative. 
    You need to jack up SLES to at least 6-10% there to have salt thickening. Get rid of CDEA, maintain CAPB if cost isn’t a big deal. Then there are 1000s of additives to improve the performance. Get the basic formula right, can guide you further after that.
  • AFRIDI85AFRIDI85 Member
    edited June 2018
    @Chemist77 thanks brother.

    I need basic formulation for manual  dishwash liquid completely but not yet find basic formulation I m searching for that's.
    can you brother helping me in formulation.
    my formula you can see above.

  • Chemist77Chemist77 Member, PCF student
    @AFRIDI85 I mentioned everything in my previous post, please read it carefully. 
  • If you can neutralize lineal sulfonic acid with Potassium Hydroxide, instead of Sodium Hydroxide, it may be better.
    Be careful when diluting KOH with water. It gets real hot.

    Also SLS will likely yield better foam with bigger bubbles than SLES.
    Then its a matter of experimentation to get better foam stability with Cocamide or Betaines.

    What difference did you notice with and without urea?
    I've seen urea in some dishwash formulas and patents but never tried it.
  • AFRIDI85AFRIDI85 Member
    edited July 2018
    @Gunther thanks for your sagution.
    Koh is costly then Noah .
    urea used for removing cloudness of Dishwash Liquid. without urea some time liquid becomes like cloud.
    SLES using for foaming and viscosity. Can SLS  working like that.?
  • IMO SLS will work better (bigger bubbles) than SLES and it's a bit cheaper.

  • @Gunther hello.
    which %percent Labsa -96%'"90% or 60%used for manual Dishwash liquid.
  • The active % doesn't really matter as it's going to be mostly water in the final formulation.
    You'll need 3-4% active linear sulfonic acid. 
    Some say you can use as low as 2.4% active

  • Chemist77Chemist77 Member, PCF student
    It is generally 96% active grade, I have used SLES and it is almost 100% success rate. You need to optimize the formulation accordingly, search this forum and you will find quite a few threads on this topic with complete information.
  • @Gunther thanks for your quick reply and good information  and also @Chemist77 good washes  for you to helping me. 
  • AFRIDI85AFRIDI85 Member
    edited July 2018
    @Gunther and @Chemist77 you both are to much help with me I appreciate that and thanks for all.
    can you send me like more others websites to collect more information.
  • thanks for all 
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