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oxalic acid
Nota de aplicación
Refers to a strong organic acid derived from sorrel and other plants. A crystalline powder, oxalic acid lends itself to many commercial applications, principally as a bleaching agent and as a reducing agent to remove tarnish, rust and ink stains. In art manufacture and conservation, further uses include removal of paint and varnish, and cleaning of encrustations from sculptures and paintings.
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