Forum Replies Created

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  • Fekher

    Professional Chemist / Formulator
    December 16, 2024 at 10:45 am in reply to: W/O liquid foundation pH question

    Trying o/w emulsion the ph of ZnO dispersion is superior then 7

  • Fekher

    Professional Chemist / Formulator
    December 7, 2024 at 11:02 am in reply to: Your precious share for emulsion

    Any idea please?

  • Fekher

    Professional Chemist / Formulator
    December 4, 2024 at 1:40 pm in reply to: Which manual dishwashing liquid will have stronger cleaning power?

    As written I guess A but it seems that some ingredients are missing in B

  • Fekher

    Professional Chemist / Formulator
    December 3, 2024 at 2:49 pm in reply to: Soap Effect in Lotion

    Is it for hair?

  • Fekher

    Professional Chemist / Formulator
    December 17, 2024 at 11:32 am in reply to: Phenoxy and ethoxylated surfactants.

    I already read about high ethoxylated product and deactivation of phenoxyethanol in scientific pdf paper just I forgot the reference if I find it I will share that.

  • Fekher

    Professional Chemist / Formulator
    December 11, 2024 at 7:07 am in reply to: Your precious share for emulsion

    Not for all batches we find problem .
    how to reheat and mix ? as heating nothing special same for mixing.
    About mixing in cool down i guess it is true accordiong to older production.

  • Fekher

    Professional Chemist / Formulator
    December 9, 2024 at 9:41 am in reply to: Your precious share for emulsion

    1) batch size almost 300 kg mixing with both anchor agitator and Turbine agitator placed in the bottom of the tank ( i have also dobt that bad ratio made between (turbine diameter/tank diameter) is bad , in bibliography ratio almost superior then 0.25 in our case it is inferior then 0.20 even the place of turbine in the bottom is not the adequat place according to what i saw in my class and bibliography (generally it is placed higher then the bottom ) @Juggsy any comment about these details i will be soo thankful .
    About heating and cooling it is double wall tank .

    2) As described , yes with mixing by turbine.

    3) You ask about frequence ? the question is not clear for me if you can explain more.

  • Fekher

    Professional Chemist / Formulator
    December 9, 2024 at 4:05 am in reply to: Your precious share for emulsion

    @Juggsy thanks a lot for your awsome answer and explanation really very informative. About brevity, reading your answer i wanted to read more and find longer answer🙂❤️. Keep sharing interesting details and sush on long answers because they are a real tresor.

  • Fekher

    Professional Chemist / Formulator
    December 6, 2024 at 4:58 am in reply to: Which manual dishwashing liquid will have stronger cleaning power?

    at high ph it has sure the strong power from sodium hydroxide however by neutralizing the base by citric acid the power will decrease normally.

  • Fekher

    Professional Chemist / Formulator
    December 5, 2024 at 9:44 am in reply to: Your precious share for emulsion

    yes that’s answer just the difference between laboratory and industrial scale and it is for sure what you said.however my two questions are not about that .

    the first is why in industrial size and trying to maintain same process we get important difference in viscosity in differents baches (some have lower viscosity then desired one)

    the second question why the batches have lower viscosity become fine in industrial scale by reheating to 50 C degree and even lower with mixing?

    Any expert have explaination or even doubts my helps ? thanks in advance

  • Fekher

    Professional Chemist / Formulator
    December 5, 2024 at 8:44 am in reply to: Which manual dishwashing liquid will have stronger cleaning power?

    may it contains important quantity of sodium hydroxide .

  • Fekher

    Professional Chemist / Formulator
    December 4, 2024 at 2:10 pm in reply to: Which manual dishwashing liquid will have stronger cleaning power?

    Ph 10 and and needs 3,5% Citric acid to drop to 7 normally it must contains not sited base.

  • Fekher

    Professional Chemist / Formulator
    December 4, 2024 at 1:31 pm in reply to: Soap Effect in Lotion

    Your formulation supposed to be far from soaping my dobt is that your raw materials are bad quality.

    Ingredients may make soaping in your formulation basically Pq7 and emulsifier but with your level of use for silicone must be too far from soaping.

  • Fekher

    Professional Chemist / Formulator
    December 4, 2024 at 1:15 pm in reply to: Soap Effect in Lotion

    I second @Abdullah

  • Fekher

    Professional Chemist / Formulator
    November 30, 2024 at 7:56 am in reply to: Stability of GMS SE in acidic ph

    Thanks a lot for sharing.

  • Fekher

    Professional Chemist / Formulator
    November 29, 2024 at 2:00 pm in reply to: Stability of GMS SE in acidic ph

    For skin feeling absolutely gms se has very superior feeling versus Ceteareth-2 or 3.the same for viscosity and texture. Just I have doubt about stability. I made sample with gms se from 6 months and still stable…

  • Fekher

    Professional Chemist / Formulator
    November 28, 2024 at 3:30 pm in reply to: Stability of GMS SE in acidic ph

    Deal with that, so the question can gms in used level with ceteareth-20 lead to stable emulsion?

  • Fekher

    Professional Chemist / Formulator
    November 28, 2024 at 5:55 am in reply to: Stability of GMS SE in acidic ph

    So the emulsion will be stable with coupling gms se by ceteareth-20?

  • Fekher

    Professional Chemist / Formulator
    November 27, 2024 at 3:51 pm in reply to: Stability of GMS SE in acidic ph

    I guess that gms se contains basically non ionic emulsifier which is glyceryl stearate and very low level of stearate soap the other ingredients are : Ppg15 Stearyl Ether, Isopropyl Myristate, Aluminum chlorohydrate, parfum, Phenoxyethanol, Sodium benzoate.

    I already made sample and it looks great: very smooth texture with ordinary viscosity.

    So my guess, scientifically even with low pH just the stearate will decompose to stearic acid and base then because the low level of soap in gms se the stability will be fine, not?

  • Fekher

    Professional Chemist / Formulator
    November 17, 2024 at 10:54 am in reply to: Some explanation about emulsion

    <div>2) Clear</div>

    4) Supposed you have 15% oil isn’t too low 1% and even more as emulsifier?

  • Fekher

    Professional Chemist / Formulator
    November 17, 2024 at 10:18 am in reply to: Some explanation about emulsion

    Thanks a lot, for

    2) do you think it is ratio between cationic active surfactants and fatty alcohol not between level of use of cationic surfactants and fatty alcohol?

    Because it is not really clear.

    4) Thanks for sharing however in practise if I use 5% ceteareth I have to use 20% fatty alcohol? It will not too much fatty alcohol?

  • Fekher

    Professional Chemist / Formulator
    November 14, 2024 at 7:57 am in reply to: Strange phenomenon in hair conditioner formulation

    In that case your explanation is logic. Thanks for the new information.

  • Fekher

    Professional Chemist / Formulator
    November 14, 2024 at 12:26 am in reply to: Any solution for colour changing in hair balsam

    Thanks, the batch for 300 kg using the same lots of colours of older batches . About changing bottles I suggested it but for economical reason the suggestion was refused.

  • Fekher

    Professional Chemist / Formulator
    November 13, 2024 at 1:11 pm in reply to: Strange phenomenon in hair conditioner formulation

    Nice guess. Just I guess even not Neutralised the carbomer is anionc not?

    So if it in both case there is anionc and cationic charges.

  • Fekher

    Professional Chemist / Formulator
    November 13, 2024 at 1:49 am in reply to: Strange phenomenon in hair conditioner formulation

    update : separation happened for hair conditionner with ultrez 20 .

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