deadrush
Hazard to Self
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Registered: 3-3-2014
Location: Worcester MA
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Na Hexametaphosphate & 31.5% HCl, & TIME
So for fun I threw some sodium Hexametaphosphate in a 5gal bucket and then about 1/3 of a gallon of hcl. I left it in the basement with a lid placed
loosely atop. I stirred by swirling the bucket for about 1min 3-5 times a day for about a week. At first, some (I assume) sodium Hexametaphosphate
stuck to the buttom but after vigorous stirring there is nothing stuck anymore. The HCl fumes weren't great but it is stored in a cold (read: average
40F) unfinished basement. I am in no rush. But why after 2 weeks does it look like this? The only change I can discern is a depreciation of hcl fumes.
Thanks
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chloric1
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Well if HCl fumes are down then it could mean the sodium hexametaphosphate changed to sodium chloride or it could mean the majority of the HCl simply
offgased. Take some of the solid salt, rinse with alcohol and dry then dissolve a few grams in warm distilled water. Sodium chloride is more soluble
and should dissolve faster also.
Fellow molecular manipulator
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bnull
National Hazard
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@deadrush: Please convert the image from HEIC to JPG.
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Boffis
International Hazard
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Hi deadrush; what exactly are you trying to achieve? What were you expecting to happen?
I suspect that slowly the polyphosphate ions will be hydrolysed to lower polymers and eventually simple ortho-phosphate ions, which due to the acidity
of the HCl will be partly protonated to H2PO4- ad HPO4--. I also suspect that most of the sodium salts present have limited solubility in such strong
HCl.
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Texium
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Thread Moved
26-3-2026 at 06:29 |
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