Members Directory - Chemists Corner

Dilfre

Member

August 15, 2016 at 1:34 pm in reply to: Perfume making

Thank you Jane, very useful forum

Dilfre

Member

August 15, 2016 at 1:09 pm in reply to: Discolouration of Cream

Hello dear formulators, my question: there is no Ascorbic acid (vit C) in the formulation supplied by Shujah. does it produced due to reaction?

Dilfre

Member

August 13, 2016 at 2:20 pm in reply to: Perfume making

zillion? in what sense

Dilfre

Member

August 9, 2016 at 10:08 am in reply to: Moisturizing effect in Dove after washing

wild game lard? Elise, Do you really think you need it? there is a lot of waste lard almost free coming from sacrificed domestic pigs all around the country.

Dilfre

Member

August 8, 2016 at 5:09 pm in reply to: Moisturizing effect in Dove after washing

animal fatty acid requires some refination process with salt and potasium alum to eliminate proteins and oxidized materials to remove residual odors.

Dilfre

Member

August 8, 2016 at 3:18 pm in reply to: How much PROPYLENE GLYCOL to dissolve SALYCILIC ACID ?

same problem arised two years ago in this forum.
https://chemistscorner.com/cosmeticsciencetalk/discussion/199/problem-dissolving-salicylic-acid
Hope it helps.

Dilfre

Member

August 4, 2016 at 3:22 pm in reply to: Salt Curve Analysis - Sulfate Free Shampoo

thanks Belassi, I guess L`Chatelier principle of common ion reduces the eficiency of NaCl as thickener due to common ion accumulation when adjust the pH with NaOH.

Dilfre

Member

August 4, 2016 at 12:18 am in reply to: Salt Curve Analysis - Sulfate Free Shampoo

thanks Belassi, sorry I’m refering to ionic electrolytes.

Dilfre

Member

August 3, 2016 at 8:49 pm in reply to: Salt Curve Analysis - Sulfate Free Shampoo

Interesting. which compound are you using to adjust the pH? and for Mr. Belassi, Are all electrolytes viscosity modifiers?

Dilfre

Member

July 28, 2016 at 5:36 pm in reply to: New cosmetics on skin and more!

Spamers! you better get away from here!

Dilfre

Member

July 28, 2016 at 5:31 pm in reply to: the death of parabens?

Ok, that is what the customers want. Which are our options as formulators?

Dilfre

Member

July 28, 2016 at 4:38 pm in reply to: Gel disodorant get liquid

thanks Bob and AJRC , I’m running test with Xanthan and guar gums. I will adjust the pH with trisodium citrate and citric acid.

Dilfre

Member

July 25, 2016 at 6:07 pm in reply to: Preservative mixture

waw! thanks for your profesional advice. This is more than help, I feel companionship in this important subject … again thanks

Dilfre

Member

July 25, 2016 at 3:14 pm in reply to: Preservative mixture

thanks Bob, you will say I`m kidding but I was waiting for your reply…very kind from you.

Dilfre

Member

July 25, 2016 at 2:58 pm in reply to: Preservative mixture

thanks for your fast reply, I am reading about it, but preservative application is a complex task. Do you know any article that help me to make my choices for different formulations? eg. w/o or o/w emulsions, shampoos, liquid soap, etc.

Dilfre

Member

July 24, 2016 at 9:47 pm in reply to: Preservative mixture

Thanks for your repply, I just trying to find something that works in most new formulations

Dilfre

Member

July 20, 2016 at 6:06 pm in reply to: Moisturizing effect in Dove after washing

what is the green point to using tallow in soap formulations? cows are killed to obtain beef not for tallow. Now we have more waste to dispose in the world.

Dilfre

Member

July 9, 2016 at 1:56 am in reply to: neutralisation (saponification) of stearic acid - calculation

At mendrulandia page there is a very good saponicalculator, is in spanish and is easy to use. Regards

http://calc.mendrulandia.es/

Dilfre

Member

July 9, 2016 at 12:49 am in reply to: Results of appearance between samples of stability tests at different temperatures

thanks Bill, I want to evaluate stability of a shampoo and also an Alum deodorant cream. I’m only running room temp tests and samples are at the second week without changes in appearance. Regads

Dilfre

Member

July 9, 2016 at 12:04 am in reply to: potassium alum as deodorant/antiperspirant

Hi Luis, what a good info you’ve posted, it helped me a lot thanks

Dilfre

Member

July 7, 2016 at 2:33 pm in reply to: Gel disodorant get liquid

thanks Bob , <i will try today an alternate formula using creme base instead of gel base. formula is:
`Fase 1

tap water 32,07%

GENAPOL lro 28% 0,31%

CMCSodium 0,31%

NIPACIDE 0,06%

Fase 2

Cetilic Alcohol 9,45%

mineral Oil 16,40%

HOSTAPHAT 1,90%

Fase 3

Etanol 25,00%

Sodium Bicarbonate 6,00%

Potasium Alum 6,00%

Fragance 2,50%

TOTAL 100,00

Dilfre

Member

July 7, 2016 at 1:32 am in reply to: Heating samples for stability testing

Thanks Joanne and Sheng. Sheng please can you write some about what is the difference in apparience of samples between 45C and 50C?

Dilfre

Member

July 6, 2016 at 9:41 pm in reply to: Gel disodorant get liquid

the gel becomes liquid and remains a grease white precipitate.

Dilfre

Member

July 5, 2016 at 12:21 am in reply to: Most popular preservatives used in the cosmetic industry

I have made my own research, and found out that Nipacide is a blend of parabenes. thanks for your repply Perry.

Dilfre

Member

July 5, 2016 at 12:12 am in reply to: Heating samples for stability testing

Hi everybody
what temperature is mostly used for accelerated stability tests?

Dilfre

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