Home Cosmetic Science Talk Formulating Liquid PEG 40 Hydrogenated Castor Oil?

  • Fekher

    Member
    September 20, 2018 at 10:58 am

    @ngarayeva001 it is generally used as solubilizer in Ratio 4 (PEG) : 1 (Perfume)

  • ngarayeva001

    Member
    September 20, 2018 at 12:41 pm

    Thank you @Fekher. I am trying to understand if the liquid form is the same as semi-solid. I usually buy from makingcosmetics and they sell semi-solid wax like product.

  • Microformulation

    Member
    September 20, 2018 at 3:29 pm

    @ngarayeva001 PEG-40 Hydrogenated Castor Oil is a very common solubilizer and is a workhorse in many markets. In my experience, it is much like Coconut Oil and will become solid or wax-like in cooler environments. This doesn’t affect the performance of the product. I will routinely place these type if ingredients into a beaker in a 40C water bath and they quickly liquify. 

  • Fekher

    Member
    September 20, 2018 at 3:52 pm

    you are welcome @ngarayeva001 

  • ngarayeva001

    Member
    September 20, 2018 at 5:29 pm

    @Microformulation, Thank you. I also thought it should be like a coconut butter, but this supplier says it’s a liquid form that can be used for a cold process. Well, I guess the only way to figure out is to try it :)

  • OldPerry

    Member
    September 20, 2018 at 7:48 pm

    The RH 40 version from BASF has a melting point of 20C.  The RH 60 version has a MP of 27C. So, depending on your room temperature or the temps it’s been exposed to, it may be solid, liquid or a mix. 

    https://dewolfchem.com/wp-content/uploads/2013/08/cremophor_rh_tds.pdf

  • Fekher

    Member
    September 20, 2018 at 8:21 pm

    @perry great explention.

  • nicoleta

    Member
    November 27, 2018 at 2:38 pm

    May I ask what is the difference between RH 40 and RH 60? May I replace RH 60 with RH 40? I would like to use this product as solubilizer for oils  /tea tree oil/.Thanks!

Log in to reply.

Chemists Corner