RDchemist15
Forum Replies Created
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@Pharma Yep. Volume depression was what I wasn’t accounting for. Thanks
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@Pharma Typo? (80%v/v) or am I missing a step here?
(63%w/w) x (.789g/ml) = (79.85% v/v)
Pharma said:
The official recommendation is on a volume/volume base; 70-80% ethanol, or 60-80% isopropanol, n-propanol or a mixture of all three is the current % against the corona virus. Weight-wise, 63% w/w would correspond to 70% v/v and therefore, your range might indeed be on a w/w basis but it’s not, read the CDC guidelines. -
@Perry
Excellent comments. This was more a thought investigation as opposed to claims I’m currently pursuing but I know something in this vein will come up one day. Sounds like a lawyer would certainly be required trying to navigate this.
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@Perry
I’m curious about your comment Perry said:But if you want to make the claim “made with organic materials” you better follow the USDA NOP guidelines (at least if you are going to sell in the US).https://www.ams.usda.gov/sites/default/files/media/OrganicCosmeticsFactSheet.pdf
Does this mean that the claim “made with organic…” can never be used, or can never be used with the implication that it was the USDA that certified it? On their USDA link it says “”USDA has no authority over…
…do not make any claims to meeting USDA organic standards”.-
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Similarly, if a product is manufactured whose agricultural producer and product handler are USDA certified, but the cosmetic manufacturer is not, can the product claim “made with organic ingredients” as long as it does not mention the USDA? But if that is allowed, can you support your claim by showing the USDA certification of the raw materials, or is that now “claiming” USDA certification even though its not on the packaging?
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I mean if you have a carte-blanche budget, I’d push for an HPLC and GC-MS. If I was a client I’d be impressed, really perplexed, but impressed.
“Unlike the competition, we can tell you EXACTLY what is in our products!”
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Gah, I read this document 3 times and still missed it every time. Guess I need a new pair of glasses. Thanks for quoting the exact section @Pharma in your answer so I can highlight the regulation for future use.
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@Belassi Coconut oil contains palmitic and stearic acids and both potassium salts should be soluble. The knockout should confirm this is potassium linoleate and potassium linolenate then. I’ve got samples on stability at 45C that are still exhibiting this precipitate. I don’t have subscription access to your paper, do they list the temperature where these salts are moderately soluble at elevated temperatures? It would be nice to do that quick test in lab to check.
This formula was based off a popular national brand so I guess their solution in manufacturing was to settle the insoluble salts and pump carefully off the top then.
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Hi @Gene,
I had that thought at one point too but our olive oil has an unsaponifiable content of ~30g/kg which in the final formula would amount to <0.015%. Our coconut oil content is ~15g/kg which would amount to ~0.042%. If it was unsaponifiable content wouldn’t removing the olive oil be futile as the unsaponifiable matter in coconut oil would still be much greater?
Its not really a lipid layer either. It looks like a coating of dust like you’d see gathering in a corner of your home.
I’ll try an olive oil knockout though in the meantime and see if that improves anything.