[YoungLia]

oh what a beast….
Is this the same machine to make lotions and emulsions?
Thanks Bobzchemist!

[YoungLia]

Thank you for the replies.

[YoungLia]

Yes, I also think petrolatum and petroleum jelly is the same with the same CAS number. USP petrolatum is the USP petroleum jelly. BP/Ph Eur/JP are also equivalent to USP.
The catch is USP or non USP petroleum have the same CAS number. 

[YoungLia]

Yes, it was stored in a 25C/77F room, it gives out liquid phase. Other petroleum jelly on the test did not. 
Did suspect some fishy business, because the item doesn’t have batch number. Complaint, and got a replacement but batch number doesn’t tally with the CoA. Thanks for the input.
 
And yes, this experience add extra measures in validating raw material coming in.
Cant believe some people still do this in their business. 

Any other test I should do to validate the supplied Petroleum Jelly prior use?

[YoungLia]

Thank you Perry

[YoungLia]

Thank you Mike_M

[YoungLia]

Wow…

So what is the norm out there then (for cosmetics such as lotion/ointment)? Just grab a ‘standard’ plastic packaging like LDPE/HDPE and run PET only?

My question was originated from my observation::: when I stored the petrolatum based product in a zip lock bag, it made the bag creased. Assuming there is some kind of reaction ….

[YoungLia]

I am aware of stability test, but how far will it cover leaching of plastic/container to the content? 

[YoungLia]

Thank you all for your time replying and sharing!

[YoungLia]

Yes, safety and stability testing will be the next thing I will put my head into. May be posting more questions after that .
Thanks again Bobzchemist.

[YoungLia]

Hi Bobzchemist,

Thank you.

As for making water-in-petrolatum emulsion, I presume we also need emulsifier don’t we? Or is there a way to avoid it altogether, yet still have a stable emulsion (considering that my water part may be as low as 10%)? (sound silly but just trying to get the trick of the trade - if any;)