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    Clarifying the Haze, Efflorescence on Works of Art

    • Paintings, sculptures and works on paper dating from the late19th through the 20th centuries from The Museum of Modern Art in NewYork (MoMA) and the Los Angeles County Museum of Art (LACMA) with awide r… 展开

    Background

    In the 1950s it was believed that this "crystalline bloom" wascaused primarily by ammonium sulfate crystals on the surface. (1) Recent work on museum artifacts and ethnographicobj… 展开

    Conservation OnLine - CoOL
    Fatty Acid Efflorescence

    Approximately two thirds of the studied works had free fatty aciddeposits on their surfaces. These works were created from variouspaints, including oil, egg tempera (egg yolk), alkyd … 展开

    Conservation OnLine - CoOL
    Commercial Sources of Fatty Acids

    Raw linseed oil naturally contains a small percentage of freefatty acids. Stand oils are made by heating the oil in the absenceof air, resulting in the isomerization of unsaturated fatt… 展开

    Conservation OnLine - CoOL