{"id":66608,"date":"2026-08-18T05:50:13","date_gmt":"2026-08-17T20:50:13","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=66608"},"modified":"2026-08-18T05:50:13","modified_gmt":"2026-08-17T20:50:13","slug":"i-tested-sodium-percarbonate-on-a-stubborn-nosebleed-stain-it-actually-disappeared-the-science-of-cleaning","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=66608&lang=en","title":{"rendered":"I Tested Sodium Percarbonate on a Stubborn Nosebleed Stain \u2014 It Actually Disappeared! (The Science of Cleaning)"},"content":{"rendered":"

I’m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n

When your child gets a nosebleed, those bloodstains can be surprisingly stubborn. Even after washing, they often refuse to disappear. So this time, I decided to put sodium percarbonate to the test and see whether this powder could really get rid of those stubborn nosebleed stains!<\/p>\n

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Sodium percarbonate<\/a> (Amazon)<\/p>\n

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I prepared some lukewarm water at around 50\u00b0C in a basin and added an appropriate amount of sodium percarbonate. Then I soaked the stained cloth for about an hour. The result? The stain was already much less noticeable.
\nI thought, \u201cI wonder if I can get it even cleaner?\u201d So I left the cloth soaking for a full day. The stain faded until it was barely visible, and the effect was pretty impressive.
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Here\u2019s a comparison\u2026
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And here\u2019s a closer look\u2026
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Sodium percarbonate is useful for much more than stain removal. It can also be used to sanitize laundry, clean washing machines, and wash bathwater heaters and other bath accessories. It\u2019s a remarkably handy cleaning powder!<\/p>\n

What exactly is sodium percarbonate?<\/h3>\n

The name \u201csodium percarbonate\u201d may be new to some of you. In Japanese, it is pronounced \u201ckatan-san.\u201d In English, it is called \u201csodium percarbonate.\u201d Its formal chemical name is sodium carbonate hydrogen peroxide (wikipedia<\/a>).
\nIts chemical formula is 2Na\u2082CO\u2083\u30fb3H\u2082O\u2082<\/b>, which looks a little intimidating. It consists of:<\/p>\n