Having had some contact with the manufacture of hydrogen peroxide, all of it needs some sort of stabilizer or it with quickly revert back to water and free oxygen in the air. That Amazon product linked say “free of toxic stabilizers and additives”, not that is is free of them altogether.
Household peroxide is stabilized with stannous chloride. Zero-tol (and other products made by BioSafe Systems) are stabilized with peroxyacetic acid. Both are extremely small additions, but in the latter case, the acid slows the decomposition reaction, allowing the peroxide to be chemically active until it dries.
ES - acetic acid is highly corrosive as well, but diluted and mixed with a little olive oil, it makes a good salad dressing.
I used Zero-Tol for years in my greenhouse and never saw any damage. I still have some from a 2-gallon jug I bought a couple of decades ago, and it’s still active. Straight from the jug it’s about 20% peroxide and will “burn” skin, but diluted for use, it’s only about 0.8%, if I remember correctly.
Mateo - they used to sell quart spray bottles of pre-diluted, ready-to-use stuff under a different trade name, it I believe they, have ceased doing so, so a 2-gallon lifetime supply is their only option.
Last edited by Ray; 08-04-2023 at 07:22 AM..
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