Citric acid is responsible for the sour taste of citric fruits like lemons, limes, oranges and grapefruit. Oranges and grapefruit have less than half the concentration of citric acid than lemons and limes. Is Citric acid bad for you? What is citric acid powder?Ĭitric acid, also known as sour salt, is a weak organic acid found in various vegetables and fruits, but its highest concentration is in citrus fruits.Remove water calcium deposits from stainless steel pet bowls.Other cleaning uses of citric acid powder.Citric acid powder for cleaning your bathroom.Remove limescale and calcium deposits from coffee makers, espresso machines and kettles.How do you mix citric acid powder for cleaning?.DIY cleaning uses for citric acid powder.