C₆H₈O₇

(CH₂COOH-C(OH)COOH-CH₂COOH)

E330

Citric acid

soluble in water, ethanol, ether.

Solubility in water:

54.0% w/w at 10 °C;

59.2% at 20 °C;

64.3% at 30 °C;

68.6% at 40 °C;

70.9% at 50 °C;

73.5% at 60 °C;

76.2% at 70 °C;

78.8% at 80 °C;

81.4% at 90 °C;

84.0% at 100 °C

Strongly acidic taste.

Pleasand, sweet, tart taste.

3.24 (1 mM solution);

2.62(10 mM solution);

2.08(100 mM solution);

Stable.

Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates.