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  1. Formic acid - Wikipedia

  2. Formic Acid (HCOOH) - Structure, Molecular Mass, physical ...

  3. Formic acid | Formula, Preparation, Uses, & Facts | Britannica

  4. Formic Acid | Formula, Properties & Application

  5. Formic Acid (HCOOH): Formula, Structure, Preparation & Uses

  6. Formic acid - Simple English Wikipedia, the free encyclopedia

  7. Formic acid Formula - Softschools.com