Dish wash liquid becomes cloudy and precipitate.

Formulating

Dish wash liquid becomes cloudy and precipitate.

Posted by AbdulRahim on December 2, 2019 at 6:11 pm

I have done many experiments to make dish wash.
But it becomes cloudy and precipitate settled down after 2 or 3 days.
I am using
Water 76 %
NaOH 2.8 % prior mixed in water.
LABSA 19.2 %
pH adjusted b/w 5 -7
Colour green
Lemon fragrance.

Plz guide me its solution.?
Thanking you in Anticipation.

Gunther replied 5 years, 2 months ago 9 Members · 11 Replies
11 Replies

ozgirl

Member
December 2, 2019 at 9:33 pm

It sounds like a problem with the solubility of the neutralised LABSA.

Try replacing some of the NaOH with TEA, as the solubility of the TEA salt of LABSA is higher than the sodium salt.
Aziz

Member
December 3, 2019 at 2:07 am

Very high percentage of LABSA . Use below 8% , add 4 % SLES , CAPB ; CDEA . Follow the dissolve rule .
UsmanAli

Member
December 3, 2019 at 10:46 am

LBSA % TOO MUCH HIGH
AND WHAT IS THE PH OF FINAL PRODUCT
Chi_n

Member
December 4, 2019 at 2:53 am

Add SXS to increase solubility of Labsa salt in water if you really need such high %.
AbdulRahim

Member
December 4, 2019 at 6:14 pm

@ Usman Ali UsmanAli said:

LBSA % TOO MUCH HIGH
AND WHAT IS THE PH OF FINAL PRODUCT

pH is b/w 5-7 neutralized with caustic soda solution.
Gunther

Member
December 4, 2019 at 10:00 pm

High percentage LABSA will surely become cloudy.

You’d need to both reduce LABSA and add some SLES, CAPB, CDEA, alcohol or propylene glycol to rise its cloud point (the temperature at which it becomes cloudy).

P.S.
Read the study quoted in this post and you’ll see why
https://chemistscorner.com/cosmeticsciencetalk/discussion/6658/why-i-cant-replicate-the-same-results-with-the-formula-used-in-this-dishwash-scientific-study

By the way, can you try to replicate the formula they suggested to see if it works for you?
It is: 10% LABSA, 2% SLES, 2% CAPB. All of them in an active basis.
Quimico

Member
December 15, 2019 at 11:23 am

I suggest you this formulation
1. Water
2. Caustic soda 1.5
3. LABSA 11
4. SLES(70) 8
5. STPP 1
6. SALT 1
7. COLOR
PH 10
DON’T ADD PERFUME IN DISHWASH FORMULATION
THE SLES WILL SOLVE THE PRECIPITATION PROBLEM
bil7

Member
December 15, 2019 at 5:15 pm

Quimico said:

I suggest you this formulation
1. Water
2. Caustic soda 1.5
3. LABSA 11
4. SLES(70) 8
5. STPP 1
6. SALT 1
7. COLOR
PH 10
DON’T ADD PERFUME IN DISHWASH FORMULATION
THE SLES WILL SOLVE THE PRECIPITATION PROBLEM

Is this formulation safe according to long term use on hands i am not seeing its safe and will dry and rough hands after 2 3 month use of regular product too high labsa and not cost effective according to sale point in low profile countries
bil7

Member
December 15, 2019 at 5:19 pm

Try this
Sles 8 percent
Labsa 2 -3 percent
Sls 1 percent
Cocobetaine 3 percent works perfectly
Naoh 5 gram
Plus citric acid 5 gram
and tartaric 1 gra
Plus sodium citrate 2-3 gram
Other additives
Glycerin
Triethanolamine qs . For 1 litre
pervez

Member
December 16, 2019 at 5:50 am

I suggest you this formulation
1. Water - How much
2. Caustic soda 1.5

1.5kg?
3. LABSA 11—-11 kg?
4. SLES(70) 8—-8kg?
5. STPP 1—-1kg?
6. SALT 1

1kg?
7. COLOR
PH 10
kindly mentioned complete quantity of each
Gunther

Member
December 16, 2019 at 3:27 pm

Is STPP = Sodium Tri Poly Phosphate?
If so, get rid of it. Phosphates cause algae bloom.