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Article | REF: M570 V1

Properties of tungsten and its alloys

Author: Henri PASTOR

Publication date: October 10, 1985

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5. Chemical properties

Note :

readers are also invited to consult the [5][12][13] references. .

5.1 General

The oxidation states of tungsten range from – 2 to + 6. The lower states – 2 to + 1 exist only in organometallic compounds, and the higher ones (+ 6 in particular) correspond to acidic properties.

At room temperature, solid tungsten is only attacked by fluorine gas and nitro-hydrofluoric acid. Regal water (HCI + HNO 3 ) and bases (NaOH, KOH) only attack it in the presence of oxidizing...

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