Clouding of aqueous solutions by euxyl® PE 9010 preservative

mikethairmikethair Member
edited August 9 in General
We have received a Rose Floral Water shipment preserved with euxyl® PE 9010 (Phenoxyethanol and Ethylhexylglycerin). The Rose Floral Water is min 98% water and min 0.5% Rose Absolute.

Previous shipments using another preservation system were always clear. The supplier does not have an explanation. Our own lab has determined the microbiol tests are negative.

Anyone experienced clouding of aqueous solutions from euxyl® PE 9010

One thought I had is that the clouding may be caused by a small concentration of Polysorbate?

Any other explanations?

Thanks.
Dr. Mike Thair
Cofounder & Chief Formulator
Indochine Natural

Comments

  • EVchemEVchem Member
    I know the solubility of the phenoxyethanol/EHG in water is not great but if they are using the standard 1% 9010  it should be fine?

    Or maybe the rose absolute has something to do with it, I don't know much about the range of variation you can see with botanical extracts but I'd guess it can be pretty wide
  • PerryPerry Administrator, Professional Chemist
    I would guess it is just some insoluble organic matter from the botanical harvest. Maybe they didn't filter it the same way this time. 
  • MarkBroussardMarkBroussard Member, Professional Chemist
    @mikethair:

    The EHG in Euxyl 9010 is what is causing the clouding as it is not particularly water-soluble.  A touch of PolySugaMulse D9 or other solubilizer should clear it up.
    Chemist/Microbiologist formulating in the Organic & Naturals arena under ECOCert/Natural Products Assn/Whole Foods/National Organic Program guidelines focused skincare & haircare products. 

    See website for details www.desertinbloomcosmeticslab.com
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