Members Directory - Chemists Corner

Abdullah

Member

December 14, 2020 at 3:24 am in reply to: Adding salicylic acid to lotion

@Cst4Ms4Tmps4 thanks. Very helpful.

If i want to neutralize salicylic acid with sodium hydroxide to make sodium salicylate, should i just add and mix sodium hydroxide%30 to salicylic acid until the pH is around 6.5 or it has a specific way?

Will neutralization of 10g salicylic acid give 10g sodium salicylate or a different quantity?

Abdullah

Member

December 13, 2020 at 10:33 am in reply to: Non-ionic oil phase stabilizer for emulsion suggestions

Water phase stabilizer not oil phase

Abdullah

Member

December 13, 2020 at 10:33 am in reply to: Non-ionic oil phase stabilizer for emulsion suggestions

@ngarayeva001 it is water phase stabilizer.
My mistake.

Abdullah

Member

December 13, 2020 at 3:20 am in reply to: Adding salicylic acid to lotion

@Cst4Ms4Tmps4 thanks

I am using olive oil, petrolatum and non-ionic surfactant Polyglyceryl-4 Laurate. I don’t have those non-ionic surfactants you said available. Is it enough?

How to make Salicylic Acid crystals extremely small? By homogenizer or there is another way?

Can i neutralize salicylic acid with sodium hydroxide to make sodium salicylate?

Does sodium salicylate have the same anti acne and exfoliating effects as salicylic acid? If yes can i use sodium salicylate instead of salicylic acid for these purposes?

Abdullah

Member

December 13, 2020 at 3:07 am in reply to: Adding salicylic acid to lotion

@MarkBroussard thanks

I did add %1 salicylic acid to oil phase and added oil phase to water. Then adjusted the pH with sodium hydroxide%30. It is stable until now.

Questions:
1. Can i adjust the pH of salicylic acid in oil phase or befor adding it to oil phase before making the emulsion?

2. In how many days usually crystalization of salicylic happes as my lotion is stable until now?

3. If crystalization happens, does it destabilize the emulsion?

Abdullah

Member

November 30, 2020 at 3:51 am in reply to: Cold process O/w thin lotion stability issue

@ketchito what is the difference between polymeric and non polymeric emulsifier?
Can you suggest some polymeric emulsifiers?

Abdullah

Member

November 30, 2020 at 3:44 am in reply to: Cold process O/w thin lotion stability issue

@Bill_Toge
I use Ethyl Lauroyl Arginate HCl which is cationic and gellan gum is anionic. They would not be compatible as Ethyl Lauroyl Arginate HCl is not compatible with xanthan gum too which is anionic.
Is there any non-ionic or cationic oil stabilizer option?

Abdullah

Member

November 30, 2020 at 3:14 am in reply to: How to make a skin oil less…..oily?

@ngarayeva001 what does salt and mg stearate do that it is a must?

Abdullah

Member

November 27, 2020 at 3:45 am in reply to: Cold process O/w thin lotion stability issue

@Bill_Toge i think that was the problem. I made another samples with %0.1 and %0.2 xanthan gum after i saw your comment. The one with %0.2 xanthan gum is stable yet.

As xanthan gum is anionic, here is another problem. I want to add Ethyl Lauroyl Arginate HCl which is cationic surfactant and incompatible with anionic xanthan gum. So what non-ionic stabilizer should i use?
Both natural and synthetic options. Good skin feel is preferred.

I want to make two versions. One low viscosity less than 3000 cps and one lotion. More than 20000 cps.

Abdullah

Member

November 26, 2020 at 7:45 am in reply to: Cold process O/w thin lotion stability issue

@ketchito i am locking for a cold processable emulsifier.

Abdullah

Member

November 26, 2020 at 7:42 am in reply to: Cold process O/w thin lotion stability issue

@singhc10 it is low viscosity lotion pump

Abdullah

Member

November 25, 2020 at 1:49 am in reply to: Cold process O/w thin lotion stability issue

@ketchito the Hlb of oil mix is 6.97
If i increase the amount of high HLB emulsifier it would be more than 6.97.
Is that ok?

Abdullah

Member

November 24, 2020 at 12:20 pm in reply to: Cold process O/w thin lotion stability issue

This is how it looks

Abdullah

Member

November 24, 2020 at 2:26 am in reply to: Pq10 vs pq7 vs cationic guar for hair combing

Thank you all

Abdullah

Member

November 23, 2020 at 1:27 am in reply to: Pq10 vs pq7 vs cationic guar for hair combing

@ketchito and what is a good silicone for this purpose?
I am going to purchase some 5 cst dimethicone for lotion. Is it good in Shampoo too? At what percentage?

Abdullah

Member

November 21, 2020 at 2:14 pm in reply to: What preservatives do you use most often?

Glyceryl caprylate and caprylhydroxamic acid

Abdullah

Member

November 21, 2020 at 12:40 pm in reply to: Silicone for Enhancing spreading and reducing tackiness

@singhc10 @klangridge thanks a lot for your information.

Abdullah

Member

November 17, 2020 at 11:35 pm in reply to: Silicone for Enhancing spreading and reducing tackiness

@singhc10 which one is better?
Dimethicone 10cst vs Dimethicone 5cst

Abdullah

Member

November 15, 2020 at 3:39 pm in reply to: Sodium phytate %50 solution

@Fekher thanks a lot sir

Abdullah

Member

November 12, 2020 at 11:37 am in reply to: Sodium phytate %50 solution

@Perry @Pharma @Fekher @chemicalmatt

Is it correct that i mix sodium phytate with water and store it at pH>10 without adding preservative to it because this way it is easier to use?

Abdullah

Member

November 12, 2020 at 11:20 am in reply to: Sodium phytate %50 solution

@EVchem yes the ph is above 101.

Abdullah

Member

November 5, 2020 at 6:29 am in reply to: Hand Soap Problem

@Halim try this formula
All in active percentage
SLES %10
CAPB %1
Coco glucoside %1
Salt no more than %2
A gentle broad spectrum preservative

Benzoyl alcohol at %1 is more gentle than (CIT/MIT) at %0.01.

Don’t look at big companies. You don’t know how much they use. May be they can preserve the product with %0.001 but you cant at %0.01.

Use a different mixing tank than what you use for paint and see the results.
For us no matter how much we clean the tank after making Shampoo, when we add water in the tank for next time use it does some foam. So maybe something from your paint is remaining in the tank and mixed with hand wash