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Boiled Linseed Oil: Linseed Oil Heated with Litharge
Akaga
Mary

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Mary

14. Ukwakira 2026FI
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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.
Hagati
A few hours, then settling

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