Increasing melting point of foot balm stick - Chemists Corner

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Increasing melting point of foot balm stick

Posted by natchemist on January 23, 2016 at 6:20 pm

Hi all,

I’m currently working on a moisturizing foot balm stick (see formula below) but can’t get a melting point higher than 45°C. I have increased candelilla wax, added carnuba wax, replaced candelilla with carnuba, added beeswax, but can’t get a higher melting point.

Any thoughts on what could be causing this issue would be greatly appreciated

Thanks!

38.9% Isopropyl myristate

25% Shea butter

15% Candelilla wax

15% Mango butter

5.0% Fragrance

4.5% Hydrogenated palm glycerides (and) Hydrogenated palm kernel glycerides

3.0% Decyl oleate

3.0% Corn starch

0.1% Tocopherol

0.5% Benzyl alcohol

Bill_Toge replied 9 years, 1 month ago 4 Members · 4 Replies
4 Replies

MarkBroussard

Professional Chemist / Formulator
January 24, 2016 at 2:42 am

I think your wax content is too low … try increasing the wax content to 18%.
Bobzchemist

Member
January 25, 2016 at 3:32 am

Something about this just sounds bizarre to me. Candelilla wax has a melt point of 68.5–72.5 °C, and it’s a pretty straightforward change - increase candelilla, decrease IPM, and your melt point has no choice but to go up. What was your melt point when you got to 25% Candelilla?
natchemist

Professional Chemist / Formulator
January 27, 2016 at 2:25 am

@Bobzchemist

My melting point with 25% candelilla was around 48-49°C.

I know it doesn’t make sense….still trying to figure this out
Bill_Toge

Professional Chemist / Formulator
January 27, 2016 at 8:24 am

as it’s the most abundant material and it has the lowest melting point, the IPM will be what’s keeping the melting point of your formula down; have you tried decreasing the level?

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