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Citric acid as a chelator
I have not been able to find an answer to THIS particular question, so I shall ask it:
How does one use citric acid as a chelator? That is, would you make a 50% solution and then use a certain % in your emulsion?
I wish to use citric acid in my skin lotion & skin cream.
I use 0.3% xanthan gum in my lotion & cream, in case that matters…
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11 Replies
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I am no expert!!!!!! … but this one kinda reminds me of a lot of the lore one sees on the net on various topics. Is citric acid a chelate…Yes. Is it your best option, most of the time… No. But people just hear that it is a chelate….and that is good enough for them…..details….who cares about those. ????
The reason EDTA or GLDA gets used in its place professionally, is they are more effective across a range of pH’s and against a wide slate of metals. Does citric match this…..generally no.
It is my understanding that to be highly effective, it needs to have a very specific molar ratio. All this tweaking of ratios…and your target pH will be all over the board.
Use edta or GLDA….and Done!
ncbi.nlm.nih.gov
Are Citric Acid-Iron II Complexes True Chelates or Just Physical Mixtures and How to Prove This?
Although mineral chelates are widely produced to be used as food fortifiers, the proof that these complexes are chelates is still missing. In our present work, iron II complexes using citric acid in different ratios are produced, and the occurrence … Continue reading
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I have no source to buy disodium EDTA anymore. The repackers have STOPPED carrying it. I also canNOT buy the GLDA, and I’ve forgotten what GLDA is short for. I’m sure it’ll come to me as I try to fall asleep, har har. However, I’m pretty sure I canNOT buy that either.
I do not trust the repacker selling the sodium phytate here in Canada, and ordering this from the U.S. is $$$$, plus there’s a chance the border inspectors will open the box and charge me $10 (or more now?) for opening the box (customs fee).
I DO have citric acid, so I was hoping I could use that.
Our water here is VERY VERY soft. However, I know from people on this forum that using a chelator even if using distilled water is a good idea because the chelator(s) can enhance a preservative’s effectiveness (or efficacy, if that’s the correct term here).
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Sounds like you order from the US, now and then:
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Hi @Graillotion
Is GLDA considered a truly effective alternative to EDTA or is EDTA superior in performance? I’ve noticed EDTA is much more commonly used in commercial products, but I’m wondering if that’s more about cost rather than performance.
Thank you!
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EDTA is king. GLDA is best alternative if chasing the bio-degradable crowd.
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I had a feeling that would be the case. Thanks again!
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When formulation cosmetics - it is very important to have purified water, meaning you will not need a chelating agent because you don’t need the chelate Calcium and Magnesium ions. In regards to Xanthum Gum - note over time how the feel of the product becomes (you will probably note that it is sticky), I use Carbomers in my creams and neutralize it to add viscosity. Your oil phase should also kick up the viscosity - i.e. increasing Stearic acid as example (hot mix cream) will increase your viscosity.
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I hear you saying, all the big brands that are using a chelate….must be using some sort of pond water?
Last time I checked, the chelate was a fundamental instrument against pathogens. 🙂
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A bit of info on more bio-degradable Chelators…
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Preservative: Add CIT/MIT with Microcare DMP (see attached)
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Thank you, I enjoyed your comment - NS should the preservative in the lotion not take care of pathogens?
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