Best preservative for dish wash liquid(shampoo)

Tagged: formulation, natural ingredients, ph, preservatives, stability testing

Formulating

Best preservative for dish wash liquid(shampoo)

Posted by haroon on September 29, 2018 at 11:36 am

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.

Aanchal replied 5 years, 3 months ago 8 Members · 18 Replies
18 Replies

BILO

Member
September 29, 2018 at 12:03 pm

use FORMALIN or known as FORMALDEHYDE diluted with water at percentages of 0.05 % and below.
haroon

Member
September 29, 2018 at 1:49 pm

BILO.thanx dear. FORMALDEHYDE how was long maintain its preserve it?
BILO

Member
September 29, 2018 at 2:07 pm

For me around 2 years.
haroon

Member
September 29, 2018 at 3:24 pm

thank you dear BILO..give valuable time…
haroon

Member
September 29, 2018 at 4:47 pm

Is without fomalin preserve it?when EDTA is present in dish wash liquid?
BILO

Member
September 30, 2018 at 7:39 am

No….EDTA is not.
Aanchal

Member
July 30, 2019 at 9:30 am

Anything else apart from formaldehyde?
Chemist77

Member
July 30, 2019 at 3:42 pm

Aqucar IG 50 aka glutaraldehyde
Gunther

Member
July 30, 2019 at 5:01 pm

Formaldehyde is banned as a preservative.
IMO parabens work fine.
sven

Member
July 30, 2019 at 5:07 pm

@Gunther here in Darkest africa formaldehyde is still very much an acceptable preservative sadly. Dirt cheap and available everywhere.
Aziz

Member
August 4, 2019 at 4:31 pm

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 .
Naim

Member
August 4, 2019 at 6:57 pm

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
sven

Member
August 4, 2019 at 9:24 pm

Sodium Benzoate is popular but you have to watch that ph closely
Aanchal

Member
August 5, 2019 at 10:46 am

Glutaraldehyde is effective in what pH range? What percentage is to be added?
Sodium benzoate is not effective in high pH range.
Chemist77

Member
August 5, 2019 at 11:47 am

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.
Aanchal

Member
August 7, 2019 at 10:26 am

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?
Chemist77

Member
August 7, 2019 at 10:29 am

Please look for Glutaradehyde IG 50
Aanchal

Member
August 7, 2019 at 11:06 am

Chemist77 said:

Please look for Glutaradehyde IG 50

Got it. Thanks a lot.