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Plastics for Preservatives
Is there a source that anyone knows of to show what types of plastics can be used for what type of preservatives? I have both liquid germall plus and optiphen plus. I will be working with different preservatives in the future, and I just need to know what types of plastic bottles I can order for lotions.
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12 Replies
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During my studies with IPCS, they warned us to be carefully with those really thin and flimsy packaging. If you are not sure, simply make 10% solution of the preservative, fill the packaging, leave it and see if it does something.
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Some packaging materials can take up preservatives.
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There is a little bit of information in this article.It is best to just contact the supplier to confirm what packaging is best. -
ozgirl said:There is a little bit of information in this article.It is best to just contact the supplier to confirm what packaging is best.
Thanks for the link. I’ll read through it.
Contacting the supplier. I emailed the maker, Ashland, over a week ago and received no response.
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Lotion suppliers use HDPE and PET plastics and raw material suppliers use these two for raw preservatives. Mine uses HDPE. These are the most common. So you can be sure thse two plastics are safe. Other plastics are rarely used.
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I’m not with my colleague Abdukkah. You can not be sure the packages are “safe” unless you confirm and control the risk. That said, risk for Germall is low but, phenoxyethanol may be at risk. Package size is a critical factor.
Major guys conduct analysis of preservative in stability, and you should as well. I understand this may be too expensive for many - so look for precdent - similar products from major cosmetic guys - formula, package composition, esp. size, etc. -
@PhilGeis - Hi, can you please explain more on Package size is a critical factor?
Is the bigger bottle the more it take up the preservative? Or is it the thickness or is it the more head space?
Thank you in advance. -
Small mascara package with plastic brush inserted would be a much greater risk for preserative adsorption than a big shampoo bottle. But major manufacturers wouild addres both.
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PhilGeis said:I’m not with my colleague Abdukkah. You can not be sure the packages are “safe” unless you confirm and control the risk. That said, risk for Germall is low but, phenoxyethanol may be at risk. Package size is a critical factor.
Major guys conduct analysis of preservative in stability, and you should as well. I understand this may be too expensive for many - so look for precdent - similar products from major cosmetic guys - formula, package composition, esp. size, etc.Thanks for your information.
I currently purchase phenoxyethanol in 20kg drums, store them in original package, fill 1kg HDPE bottles from that and use from these 1kg Bottles in my products. So what materials are safest for phenoxyethanol to be stored in? -
Follow supplier’s choice for raw material storage. What are the drums - are they lined?
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PhilGeis said:Follow supplier’s choice for raw material storage. What are the drums - are they lined?
The drums are also HDPE.
What do you mean by lined? -
Then use HDPE.
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