Dishwash Liquid - Chemists Corner

Formulating

Dishwash Liquid

Posted by Avirock on May 23, 2017 at 6:43 am

Hello friend I need your Assistance on My Dish wash Liquid.
I have make DW Liquid with following ingredients

860 gm Water

94 gm LABSA

12.5 NaOH

27 gm CDEA

1 gm EDTA

2 gm Sodium chloride

First i mix LABSA in to water and mix NaOh after that EDTA,
CDEA last SC

My problem is with CDEA when i prepare liquid without CDEA
it is very clear (transparent) but when i prepare liquid with CDEA it become very cloudy after
8 hr.

Any piece of advice, suggestion or hint

Thanks

Chirag replied 6 years, 5 months ago 5 Members · 18 Replies
18 Replies

johnb

Member
May 23, 2017 at 6:55 am

There seems to be an excess of CDEA relative to the amount of active surfactant.

Reduce/omit the amide and perhaps include SLES as foam booster/thickener.
Avirock

Member
May 23, 2017 at 7:27 am

Thanks
good point but i had tried with 18 ml amide same result could you please specify the amount of amide.

Thanks
johnb

Member
May 23, 2017 at 7:33 am

I would not use this material in a dishwash liquid. In fact, in view of the adverse health warnings there are about it, I wouldn’t use it in any product.
Avirock

Member
May 23, 2017 at 7:55 am

Thanks
i am searching on google and other website CDEA is common ingredient in Dis wash liquid. could you please suggest any substitute of Amide in dish wash.
Thanks
johnb

Member
May 23, 2017 at 8:54 am

I appreciate that CDEA is common in dishwash liquids. The amount you are using seems to me to be excessive for the amount of active detergent matter you have in your formulation - even your reduced amount of CDEA.

CDEA also varies in quality - some grades contain a large excess of free diethanolamine which can have a profound effect on the solubility in, and clarity of, the final product.

I have already suggested SLES as a partial or complete alternative. There are also betaine detergents and amine oxides and numerous others which could be useful.
Avirock

Member
May 23, 2017 at 9:11 am

thanks
Chemist77

Member
May 23, 2017 at 1:36 pm

How about a betaine or amine oxide, pretty common in dish wash liquids. Omit the amide altogether.
johnb

Member
May 24, 2017 at 7:28 am

How about a betaine or amine oxide, pretty common in dish wash liquids. Omit the amide altogether.

Already suggested.
Avirock

Member
May 30, 2017 at 5:21 am

hi i have got the transparent DW liquid but i am not getting thickness i had added the salt but not got thickness is there any thinking agent for dwl.
johnb

Member
May 30, 2017 at 7:24 am

You have not revealed your latest formula so we are unable to comment or make suggestions how to thicken.
Avirock

Member
May 30, 2017 at 7:39 am

First i mix LABSA in to water and mix NaOh after that EDTA, SLES last SC this is my formula but i ma not getting thickness
johnb

Member
May 30, 2017 at 8:30 am

Quantities of each? Do you check for neutrality of the mix after adding the NaOH? An excess (or deficiency) of NaOH can influence the viscosity of the resultant mix.
Avirock

Member
May 30, 2017 at 8:40 am

860 gm Water

94 gm LABSA

12.5 NaOH

50 gm SLES

1 gm EDTA

2 gm Sodium chloride

and maintain ph 7 -8 when i neutralize the labsa.
johnb

Member
May 30, 2017 at 9:16 am

The active detergent matter is very low and it is doubtful that you will achieve a viscosity matching a reasonable quality dishwashing detergent.

I feel it would be worthwhile you re-examining the whole concept of this product.
Avirock

Member
October 30, 2017 at 4:44 am

visite following video this will help.

https://www.youtube.com/watch?v=hL988q-R70A&lc=z22di1yjjxjuhjblaacdp43a5tykj0adjumho330ellw03c010c
Avirock

Member
October 30, 2017 at 7:22 am

https://www.youtube.com/watch?v=hL988q-R70A
nabil

Member
October 31, 2017 at 8:26 pm

10 grammes of CDEA is more then enough.
lower the salt and edta is too high.
add edta add the end.
Chirag

Member
December 4, 2017 at 7:37 am

Add 1-2% CDEA in d formula rhen see if you get some Viscosity..The water content in your formula is quite high hence why there is no use of Preservatives ?