Formic acid is also significantly used in the production of leather, including tanning (23% of the global consumption in 2009), and in dyeing and finishing textiles (9% of the global consumption in 2009) because of its acidic nature.
O ácido fórmico tamén se usa significativamente na produción de coiro, incluíndo o tintado (23% do consumo global en 2009), e no tinguido e acabado de produtos téxtiles (9% do consumo global en 2009) debido á sú a natureza ácida.