The Linseed oil reference article from the English Wikipedia on 24-Apr-2004
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Linseed oil

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Linseed oil is an oil derived from the flax plant (Linum usitatissimum, Linaceae). It is obtained by pressing, followed by an optional stage of solvent extraction.

Its uses include:

The linoleic acid in linseed oil is used as a dietary supplement.

Safety Note: Rags soaked in linseed oil can self-ignite if stored in a confined space. They should be washed with water and disposed of carefully.