The invention relates to a glazing (1) with variable opacification, comprising at least two glass panels (1a, 1b) delimiting an intermediate cell (10) occupied by a volatile compound and means ensuring the partial transition of said compound between its gaseous state. corresponding to the transparency of the glazing and its liquid state corresponding to the opacification of the glazing by condensation on at least one of the two panels, characterized in that said transition means comprise at least one thermally conductive element (2) arranged at the contact of one of said panels (1a, 1b) and connected to a thermodynamic circuit (3) intended to vary its temperature. Abstract figure: [Fig. 1]
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