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Citric Acid Anhydrous

Citric Acid Anhydrous

Product Details:


Product Description

Product Details :

Product Name


C.A.S. No.


Molecular Formula


Molecular Weight







Colorless crystals or white powder, slightly hygroscopic in moist dry air.

White or almost white, crystalline powder, colorless crystals or granules

White Powder


Very soluble in water, freely soluble in ethanol (96 %).

Very soluble in water, freely soluble in ethanol (96 %).

Clarity of Solution

The Test solution shows the same clarity as that of water.

Appearance of solution (color)

20 % w/v. solution is clear and not more intensely colored than reference solution YS7,BYS7 OR GYS7.

20 % w/v solution is clear and color less or not more intensely colored than reference solution Y7, BY7 and GY7.

The test solution is not more intensely colored than standard solution A,B, or C, or Water.


(A) Reaction

(B)) By IR Absorption

(C) Reaction

(D) Reaction

(E) Test of water

  1. A 10 % w/v solution is strongly acidic.

  2. Reactions of citrates

  1. 10 % w/v solution is strongly acidic

  2. Must comply with the Citric acid anhydrous CRS.

  3. A red color develops

  4. White precipitate is produced

  5. Complies with the test of water.

  1. By IR Spectrum


NMT 1ppm.


Bacterial end toxins


The level of bacterial endotoxins is such that the requirement in the relevant dosage form monograph(S)in which citric acid monohydrate is used can be met.


Meets the requirements for sterility.


Any opalescence in the solution is not more intense than that in a mixture of 5 ml of solution and 5 ml of distilled water.


NMT 200 ppm

Heavy metals

NMT 10 ppm

NMT 10 ppm


NMT 50 ppm


Readily carbonisable substance

Any color produced is not more than intense than that of the a mixture of 1.0 ml of CCS and 9.0 ml of FCS.

The solution is not more intensely colored than a mixture of 1 ml of red primary solution and 9 ml of yellow primary solution.

The color of acid is not darker than that of a similar volume of matching fluid K


NMT 150 ppm

NMT 150 ppm

NMT 150 ppm

Oxalic acid

Any pink color is produced is not more instance than that produced by carrying out the test using 0.2 mg of oxalic acid dissolve in 4 ml of water. .

NMT 360 ppm

NMT 360 ppm

Limit of Aluminium


The fluorescencence of the test solution does not exceed that of the standard solution (0.2 g/g)

Residual Solvents

Meets the requirements

Organic Volatile impurities

Meets the requirements


NMT 50 ppm

Water by KF

NMT 1.0 %

NMT 1.0 %

NMT 1.0 %

Sulphated ash

NMT 0.1 %

NMT 0.1 %

NMT 0.1 % (residue on ignition)


99.0 % to 101.0 %

99.5 % - 100.5 %

99.5 %- 100.5 %

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