How increased shelf life of Dishwash Liquid

Formulating

How increased shelf life of Dishwash Liquid

Posted by AFRIDI85 on May 31, 2018 at 5:02 pm

How do you increase the shelf life of Dishwash liquid?

AFRIDI85 replied 6 years, 2 months ago 7 Members · 22 Replies
22 Replies

Chemist77

Member
May 31, 2018 at 6:14 pm

Be leaving it in Arctic conditions. You need to elaborate more the term shelf life.
belassi

Member
May 31, 2018 at 7:48 pm

You need my magic ingredient, Shelflife GLS. I can sell you some but it’s pricey.
AFRIDI85

Member
June 26, 2018 at 12:51 pm

Thanks for reply
OldPerry

Professional Chemist / Formulator
June 26, 2018 at 3:00 pm

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.
AFRIDI85

Member
June 28, 2018 at 3:10 am

Hi Perry.
Thanks sir for reply.
my formula for manual Dishwash liquid is.
1.Labsa.9%
2.seles.2%
3.cdea.2.7%
4.soda ash. 02%
5.coco Betain.1%
6.Castic soda. .012%
7.edta..1gm
8.urea.4gm
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.
ozgirl

Member
June 28, 2018 at 3:53 am

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.
em88

Pharmacist
June 28, 2018 at 6:22 am

lol @Chemist77 and @Belassi, it is good to start the day with a laugh

@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.
AFRIDI85

Member
June 28, 2018 at 7:30 am

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.?
OldPerry

Professional Chemist / Formulator
June 28, 2018 at 12:51 pm

Here is a write-up on how to do a stability test.
AFRIDI85

Member
June 28, 2018 at 1:47 pm

Thanks you sir @Perry for suggestion.
Chemist77

Member
June 28, 2018 at 6:58 pm

@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.
AFRIDI85

Member
June 29, 2018 at 5:05 am

@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.
Chemist77

Member
June 29, 2018 at 2:16 pm

@AFRIDI85 I mentioned everything in my previous post, please read it carefully.
Gunther

Member
June 29, 2018 at 5:38 pm

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.
AFRIDI85

Member
July 2, 2018 at 12:22 pm

@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.?
Gunther

Member
July 2, 2018 at 5:36 pm

IMO SLS will work better (bigger bubbles) than SLES and it’s a bit cheaper.
AFRIDI85

Member
July 3, 2018 at 5:32 pm

@Gunther hello.
which %percent Labsa -96%'”90% or 60%used for manual Dishwash liquid.
Gunther

Member
July 3, 2018 at 8:40 pm

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
https://www.happi.com/contents/view_/2011-03-04/formulating-manual-dishwash-detergents
Chemist77

Member
July 4, 2018 at 3:26 am

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.
AFRIDI85

Member
July 4, 2018 at 9:57 am

@Gunther thanks for your quick reply and good information and also @Chemist77 good washes for you to helping me.
AFRIDI85

Member
July 6, 2018 at 6:24 pm

@Gunther and @Chemist77 you both are to much help with me I appreciate that and thanks for all.
can you send me like http://www.happi.com. more others websites to collect more information.
AFRIDI85

Member
November 11, 2018 at 1:32 am

thanks for all