A tartrate is a salt or ester of the organic compound tartaric acid, a dicarboxylic acid. Its formula is O⁻OC-CH(OH)-CH(OH)-COO⁻.

As food additives, tartrates are used as antioxidants. Examples are:

• sodium tartrates (E335)
  • monosodium tartrate
  • disodium tartrate
• potassium tartrates (E336)
  • monopotassium tartrate (cream of tartar)
  • dipotassium tartrate
• potassium sodium tartrate (E337)
• calcium tartrate (E354, used as emulsifier)
• stearyl tartrate (E483, used as emulsifier)

Carboxylate anions

Tartrate | Тартраты