6.5-7.0. According to the properties of ammonium citrate, ammonium citrate is also called triammonium citrate. The pH of ammonium citrate is 6.5-7.0. It is a white deliquescent powder or crystal. Easily soluble in water. Decomposes at melting point. Low toxicity, the smaller the concentration, the lower the pH, the weaker the acidity, the larger the pH, so the pH value of 13.6% ammonium citrate is between 6.5-7.0.