The melting point of citric acid is 156 degrees Celsius or 313 degrees Fahrenheit. The molecular formula of citric acid is C6H8O7. It has a molar mass of 192.12 grams per mole.
Citric acid is a white crystalline powder at room temperature. It occurs in nature in most citrus fruits such as lemon, oranges and peaches. It is soluble in water and in organic compounds such as alcohols and ethers.
Citric acid is an organic compound with a sour taste. It is often used as a preservative. It is added to food preparations to provide a lemony flavor. Citric acid is used as a cleaning agent. It is often used to soften hard water containing salts of calcium and magnesium.