ammonium persulfate

noun

: a colorless crystalline salt (NH4)2S2O8 used as an oxidizing agent and for improving dense photographic negatives

Word History

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of ammonium persulfate was in 1891

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Dictionary Entries Near ammonium persulfate

Cite this Entry

“Ammonium persulfate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ammonium%20persulfate. Accessed 4 Oct. 2023.

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