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Léwu
Boiled Linseed Oil: Linseed Oil Heated with Litharge
Raw linseed oil hardens in air, but slowly. Heated with a little litharge (lead oxide) it dries much faster; that is what painters and varnish makers called boiled oil. Sheridan Muspratt (1860) gives the measure: seven or eight per cent of litharge, heated until the oil turns reddish. The lead stays in the oil: never on food surfaces.
The picture: "boiled" linseed oil ground with an earth pigment into linseed oil paint.
Àárín
A few hours, then settling
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