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EDTA gel viscosity problem
Made Gel of
PEG 400 50%, PEG 4000 25%, EDTA 15%, UREA 5%, H2O2-5%.
After week it’s losses viscosity.
Any guesses?? pH= 7.2
can adding ACID phoshate help?
same also made of HEC gel also loosing viscosity.
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8 Replies
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Hmm wear is the gelling agent? you are just creating Viskosity by adding high melting PEG 4000 aren’t you? i would gues you destroy your PEG cains with the high potent Urea hydrogen peroxide you are Greeting with this mixture.
However, what is the purpose of this formulation? is that a cosmetic product or a bleaching agent? Combining urea and H2O2 will lead to the formation of Urea hydrogen peroxide (CH6N2O) which is a very potent Bleaching product what are the 15 % EDTA for ?
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It’s a dental product.
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Teeth Whitening.
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Did to dissolved peg 4000 or melted it?
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PEG-400 & 4000 melted together. I think pH roll is important here. I try keeping different different pH.
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keep me updated i am trying to make edta gel for dental use.
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I am with gordof here: why so much EDTA? It doesn’t make any sense. Is there a decimal point missing? Also not especially safe orally.
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