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Copper(I) phosphide

chemical compound

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 17, 2026
Entity authorityQ167575
Source-derived summary

Copper phosphide is an inorganic compound with the chemical formula Cu3P, a phosphide of copper. It is a brittle, yellowish-grey solid.

Properties

Copper phosphide does not react with water. It shows fluorescence when subjected to ultraviolet light.

Structure

Recent crystallographic investigations have proven Cu3P to be copper deficient, which means that the sum formula of this compound is more accurately expressed as Cu3−xP.

Production

Copper phosphide can be produced in a reverberatory furnace or crucible by the reaction of red phosphorus with a copper-rich material.

It can be prepared photochemically, by irradiating cupric hypophosphite with ultraviolet radiation.

It can also be produced by reducing copper(II) phosphate with aluminum.

Uses

Copper phosphide has a role in copper alloys, namely in phosphor bronze. It is a very good deoxidizer of copper.

Editorial summary

“Copper(I) phosphide” enters the record as chemical compound. Crown Archives preserves that source wording while asking what Copper, phosphide and chemical can confirm, complicate or overturn.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current 129-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Copper, phosphide and chemical.
Editorial analysis

Why this record matters

“Copper(I) phosphide” is worth following because a concise public description often conceals a longer documentary argument. Here, Copper, phosphide and chemical provides the most credible route into that argument.

Evidence profile

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Feb 17, 2026. The linked authority identifier is Q167575. None of the 0 selected statements returned an explicit reference.

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Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from Copper(I) phosphide” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.