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Magnesium oil spray nightmare
I’m trying to make some Magnesium Oil Spray at 40% Magnesium Chloride plus 10% hydrosol. I have a few questions.
1. After I combine everything, the pH was around 2 initially. Is this normal? I used 30% Sodium Hydroxide to bring up the pH to about 7(pH jumps quickly at one point from 5 to 7 with just one drop), then I put my pH meter to a jar of plain water to rinse, and I noticed that it’s reading the water at pH 10! (my water pH is around 6 I tested before). At this point I’m not sure if something’s wrong with the meter or the magnesium solution wracked pH meter out of balance. I had to re-calibrate it after the first reading.
2. I wanted to bring the pH down to around 5, but it’s just so hard to do. when I add citric acid solution, the reading went down to 4.5, but then slowly went up to 7 and continue to go up as I stir. I repeated the steps, but the pH continues to go up slowly, the reading doesn’t stabilize at all. It’s a nightmare.
3. I read somewhere that Magnesium Chloride at high percentage is self preserving, is this true? I’ve seen many brands and products on the market do not contain preservatives at all. But I added 0.2% sodium phytate and 0.7% euxyl pe 9010 anyway. Not sure if this is right or necessary.
Thank you in advance for the inputs.
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