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“Nivea Sun protect & refresh” melted my tub

I stupidly applied spray sunscreen on my children inside our white, acrylic bathtub and the floor ended up with a white, very sticky residue that rubs off on things, but will not wash away with detergent. The sunscreen turns out to be based on denatured alcohol and contains Benzyl Alcohol, so I suspect it melted […]

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What compounds qualify as “soap” for killing coronavirus? [closed]

Been trying to figure this out on my own, now turning to the experts. Thanks in advance for your insight. Disinfecting sprays are virtually impossible to purchase; soap and water does the trick for killing coronavirus; but taking a soapy rag to doorknobs is time consuming and messy. QUESTION 1: Does a “multipurpose cleaning spray” […]

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Is there an exothermic reaction when washing hands with water and hand sanitiser?

I accidentally washed my hands with water (cold/lukewarm) and hand sanitiser alcohol (room temperature) instead of soap. I felt like my hands have gotten warmer when I applied it. Only using alcohol makes hands colder (due to evaporation?) and the temperature of the water did not change. What could have caused this, is it a […]