Word: butanol
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Dates: during 1930-1939
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...keeping frescoes fresh. First sign of success in their collaboration came when they used a spray of glycerine, lime, marble dust and water. But no matter how little glycerine they used it would appear later in small beads on the surface of the plaster. Then they tried butyl alcohol (butanol) with the same ingredients. This worked, but made the plaster surface too soft to work on. The final formula was the simplest: equal parts of butanol and water. Muralist Rivera, pleased as Punch, confirmed their claim that spraying walls with this preparation every three or four hours enables a painter...
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