Determination of Formic Acid

1. Scope

Applicable to the determination of industrial-grade formic acid.

2. Test Method
2.1 Determination of Formic Acid Content
2.1.1 Principle
Formic acid is a weak acid and can be titrated with a standard NaOH solution using phenolphthalein as the indicator. The reaction is as follows:
HCOOH + NaOH → HCOONa + H₂O

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