Best preservative for dish wash liquid(shampoo)

hi all,
give suggestion for good preservative for dish wash liquid that it will  long life and work properly.i only used EDTA .1 gm for preservative.I made dish wash liquid for business purpose. 
i am very thankful to all on this act.

Comments

  • BILOBILO Member
    edited September 2018
    use FORMALIN or known as FORMALDEHYDE diluted with water at percentages of 0.05 % and below.
  • BILO.thanx dear. FORMALDEHYDE how was long  maintain its preserve it?
  • For me around 2 years.
  • thank you dear BILO..give valuable time...
  • Is without fomalin  preserve it?when EDTA is present in dish wash liquid?
  • No....EDTA is not.
  • AanchalAanchal Member
    Anything else apart from formaldehyde? 
  • Chemist77Chemist77 Member, PCF student
    Aqucar IG 50 aka glutaraldehyde 
  • GuntherGunther Member
    Formaldehyde is banned as a preservative.
    IMO parabens work fine.
  • svensven Member
    @Gunther here in Darkest africa formaldehyde is still very much an acceptable preservative sadly. Dirt cheap and available everywhere.
  • AzizAziz Member
    Gunther said:
    Formaldehyde is banned as a preservative.
    IMO parabens work fine.
    What about DM DM hydantoin ,  Is it also banned ? 
    I like MPS , it is effective and works in a good pH range . 
  • NaimNaim Member
    haroon said:
    hi all,
    give suggestion for good preservative for dish wash liquid that it will  long life and work properly.i only used EDTA .1 gm for preservative.I made dish wash liquid for business purpose. 
    i am very thankful to all on this act.

    You can use sodium benzoate
  • svensven Member
    edited August 4
    Sodium Benzoate is popular but you have to watch that ph closely
  • AanchalAanchal Member
    edited August 5
    Glutaraldehyde is effective in what pH range? What percentage is to be added?
    Sodium benzoate is not effective in high pH range.
  • Chemist77Chemist77 Member, PCF student
    Well I believe that an effective pH of around 8 will be optimum though it works in both the media. Rate of kill is higher at a higher pH compared to acidic pH. I generally use around 0.10% effectively and never had any issue. 

  • AanchalAanchal Member
    Chemist77 said:
    Well I believe that an effective pH of around 8 will be optimum though it works in both the media. Rate of kill is higher at a higher pH compared to acidic pH. I generally use around 0.10% effectively and never had any issue. 


    Thanks. Glutaraldehyde is available in 50/70 % or lower concentrations 
    Fixing Glutaraldehyde as the sole preservative in a pH of 7 to 9 , pls share what commercially available concentration you use? 
  • Chemist77Chemist77 Member, PCF student
    Please look for Glutaradehyde IG 50 
  • AanchalAanchal Member
    Chemist77 said:
    Please look for Glutaradehyde IG 50 
    Got it. Thanks a lot. 
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