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Citric acid is a triprotic acid, with pK a values, extrapolated to zero ionic strength, of 3.128, 4.761, and 6.396 at 25 °C. [21] The pK a of the hydroxyl group has been found, by means of 13 C NMR spectroscopy, to be 14.4. [22] The speciation diagram shows that solutions of citric acid are buffer solutions between about pH 2 and pH 8. In ...
Alsever's solution is a saline liquid used to prevent coagulation of blood. [ 1 ] [ 2 ] It is composed of 2.05% dextrose , 0.8% sodium citrate , 0.055% citric acid , and 0.42% sodium chloride . For usage, an equal volume of blood is gently, but thoroughly, mixed with the solution.
Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K 3 C 6 H 5 O 7. It is a white, hygroscopic crystalline powder. It is odorless with a saline taste. It contains 38.28% potassium by mass. In the monohydrate form, it is highly hygroscopic and deliquescent.
Speciation diagram for a 10-millimolar solution of citric acid. The violet curve corresponds to the trisodium citrate. As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH. It is used to control acidity in some substances, such as gelatin desserts. It can be found in the milk ...
McIlvaine buffer is a buffer solution composed of citric acid and disodium hydrogen phosphate, also known as citrate-phosphate buffer.It was introduced in 1921 by the United States agronomist Theodore Clinton McIlvaine (1875–1959) from West Virginia University, and it can be prepared in pH 2.2 to 8 by mixing two stock solutions.
In the case of citric acid, the overlap is extensive and solutions of citric acid are buffered over the whole range of pH 2.5 to 7.5. Calculation of the pH with a polyprotic acid requires a speciation calculation to be performed. In the case of citric acid, this entails the solution of the two equations of mass balance:
glycolic acid; sulfamic acid; disodium capryloamphodipropionate; ethylene glycol n-butyl ether; citric acid; One formulation is (by weight) lactic acid 12–18%, gluconic acid 2.50–3.75%, lauramine oxide 1.50–3.25%, with the remainder being water. [3] The product also contained phosphoric acid at one time, [citation needed] but it is now ...
Citric acid/potassium-sodium citrate is a drug used in the treatment of metabolic acidosis (a disorder in which the blood is too acidic). It is made up of citrate (the weak base of citric acid), a sodium cation and potassium cation. It can also be used for the treatment of kidney stones [1] by treating hypocitraturia. [2]