Formate or methanoate is the ion HCOO⁻ (formic acid minus one hydrogen ion).

A formate (compound) is a salt or ester of formic acid.

See also formic acid.

Examples

• ethyl formate, CH₃CH₂(HCOO)
• sodium formate, Na(HCOO), ^*
• methyl formate, CH₃(HCOO)
• methyl chloro formate, CH₂Cl(HCOO), ^*
• triethyl orthoformate, C₇H₁₆O₃, ^*
• trimethyl orthoformate, C₄H₁₀O₃, ^*

See Formates for a list.

Carboxylate anions