Which one is good to replace Triethanolamine? Its smell ammonia

Formulating

Which one is good to replace Triethanolamine? Its smell ammonia

Posted by Dtdang on August 5, 2018 at 12:20 am

Anyone know that which ingredients can replace Triethanolamine?
Thanks in advance?

Dtdang replied 6 years, 6 months ago 5 Members · 13 Replies
13 Replies

Dtdang

Member
August 5, 2018 at 12:21 am

The main reason is for pH adjuster
belassi

Member
August 5, 2018 at 3:07 am

I prefer pure organic sodium hydroxide, made by hand reacting the finest sodium metal with the most buoyant hydrogen and freshest oxygen obtainable.
Chemist77

Member
August 5, 2018 at 3:13 am

@Belassi can we do it in situ ??????
Dtdang

Member
August 5, 2018 at 3:50 am

Thanks Belassi.

Chemist77! what do you mean situ? I do not get it. Thanks
Chemist77

Member
August 5, 2018 at 4:24 am

@Dtdang Look there are many buffers to replace Triethanolamine e.g. you could use NaOH, KOH, AMP-95, L-Arginine Neutrol TE, etc. The choice is yours and I suggest try to do your own research as well. Will help you to learn things in a much better way.
OldPerry

Professional Chemist / Formulator
August 5, 2018 at 1:39 pm

@Belassi - Technically, there is no such thing as “organic” sodium hydroxide since it lacks a Carbon atom.
belassi

Member
August 5, 2018 at 3:02 pm

@Chemist77: Yes, but only if you can run bloody fast. Take a piece the size of a sugar cube and drop it into a bucket of water. Fizz fizz fizz Kaboom!
Also makes a very effective drain cleaner. However, it might be necessary to dig up the road afterwards to change all the broken sewer pipes. As a friend of mine discovered after he flushed a chunk down the loo. Manhole covers were blown off and poo-spouts erupted, one of which coated a poor old age pensioner hobbling along nearby.
Chemist77

Member
August 5, 2018 at 4:20 pm

@Belassi OAP plus Sodium, stinking idea ???
@Perry think Belassi was just trying to make the situation lighter
Dtdang

Member
August 5, 2018 at 5:45 pm

Thanks all for helping me learning!
I think about basic concept diluting weak acid with water and measure the final pH when taking chemistry a long time ago. If this works, I do not need adjuster. My concern is the accuracy of concept Vs. practice.
For glycolic acid, the pKa = 3.83, I want to keep pH = 4, then about 50% free acid will be absorbed to skin.
Is it correct for real practice?
em88

Pharmacist
August 5, 2018 at 7:06 pm

Sodium citrate may help.
Dtdang

Member
August 6, 2018 at 2:15 am

Dear Belassi!
Can I dilute 70% glycolic acid because I need the concentration less than 10% and the final pH must be equal or greater than 3.5. This way I do not need the adjuster.
For example, I measure 13 mL of 70% glycolic acid and add into it with 39 mL of distilled water. This way I can have 8.75% glycolic acid.
The pH can be calculated as below:
[H+] = square root of (Ka x M(final in mol))
pH = -log[H+]

Please give me your comments. Thanks a lot.
belassi

Member
August 6, 2018 at 2:27 am

I don’t see any reason why not but don’t forget to verify the pH
Dtdang

Member
August 6, 2018 at 2:41 am

Thanks Belassi