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sodium tripolyphosphate

[ trahy-pol-ee-fos-feyt ]
/ ˌtraɪ pɒl iˈfɒs feɪt /
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noun Chemistry.

a white powder, Na5P3O10, used as a water softener, sequestering agent, and food additive.

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Also called sodium triphosphate.

Origin of sodium tripolyphosphate

First recorded in 1940–45; tri- + poly- + phosphate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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