The principal use of formic acid is as a preservative and antibacterial agent in livestock feed. When sprayed on fresh hay or other silage, it arrests certain decay processes and causes the feed to retain its nutritive value longer, and so it is widely used to preserve winter feed for cattle.
The next-greater dose tested, 20 mM, did not have any effect. Formic Acid was nonclas- togenic, because the effects could be eliminated by either neutralization.
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