[Weatherend]

Hi there, I know this comment is crazy old but do you happen to know Croda’s MOQ for this material (Supermol L) and its shelf life?

Much appreciated!

[Weatherend]

@PhilGeis ok got it.

Hydrosol is about 65% (it’s the water part of water phase) making it a significant contributor to what goes on overall in the formula. Overall, I’ve found rose hydrosol to have a lot of quirks from a stability perspective, so its really been an ongoing experiment and learning tool for me.

Thanks again for your help expanding my knowledge in this area.

[Weatherend]

Thanks again @PhilGeis - I can definitely look into getting that as part of analysis.

Is there a known ppm for Copper that has been established as a baseline for interference with Sodium Benzoate? Once I have the updated CoA info, will need some sort of reference point for the break point.

[Weatherend]

@PhilGeis thank you so much for taking the time to reply. I’ve benefited hugely from the knowledge and expertise you’ve generously shared in this forum and am just finishing up your book.

I wanted to clarify my question and ask a follow up based on your response.

To clarify: Hydrosol is NOT part of my preservation system. My question is actually the opposite, is it possible (probable) that hydrosol - specifically copper by-products from the distillation process can cause destabilization of sodium benzoate. I read elsewhere that copper can have this effect, but could not find substantiating information.

Stated more broadly, because hydrosol is a more specific use case and a bit of red herring to the actual question:

Is it true that in the presence of certain metal ions, such as <strong style=”font-family: inherit; font-size: inherit; color: var(-bb-body-text-color);”>copper or iron, sodium benzoate may undergo reactions that could affect the stability and safety of the product and undermine its preservative function?

Apologies if I misunderstood your original reply.