At room temperature (20-27C or 68-80F) somewhat we noted separation (liquid part exist) on my formulation which contain 95% USP petroleum jelly and 5% solids. We presume its from the petroleum jelly as we also noted liquid phase when we tried storing the petro jelly at 25C or 77F.
The manuf MSDS claims that the melting point is 45-60C or 113-140F.
What does the industry do with this kind of petro jelly to ensure homogeneity at room temperature? It will be problematic for packaging later on if it separates at room temperature...
Or should we throw this petro jelly to the bin and get a better one?
The one I've used is not the cheapest - USP grade and $15/kg!
I have also requested 5 other suppliers in a quest for different USP Petroleum Jelly, but can someone share something please?
Anything I have to do before processing petro jelly or anything I need to look out for when purchasing petro jelly? Being all the same CAS number, experience counts I suppose. Anyone?
It also appear to me putting the Petroleum jelly through three roll mill ( to make my product) also makes more liquid phase at room temperature. Any thoughts?
Thanks heaps in adv.