Sodium Fluoride as Preservative.
Zinc chloride and creosote are often used for preserving wood, but it has been found that sodium fluoride will do as well. The Forest Products Laboratory in U.S.A. thought that laboratory tests d'd not sufficiently prove this, and so in 1914 sappine ties were treated by the three preservatives and placed side by side. After five years they , were examined. Those treated with creosote were in the best condition and those treated with zinc chloride and sodium fluoride showed but little decay.
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https://paperspast.natlib.govt.nz/periodicals/P19201101.2.23
Bibliographic details
Progress, Volume XVI, Issue 3, 1 November 1920, Page 67
Word Count
86Sodium Fluoride as Preservative. Progress, Volume XVI, Issue 3, 1 November 1920, Page 67
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