Citric Acid Monohydrate
Molecular Formula:C6H8O7.H2O Molecular Weight:210.14 g/mol CAS NO.:5949-29-1
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Specification
Character
It occurs as a white or almost white, crystalline powder, colorless crystals or granules, efflorescent.
IdentificationTest(A)Test(B)
Test(C)
Test(D)
Test(E)
(a)Specified Test. The solution is strongly acidic.(b)Infrared Absorption spectrophotometry
(c)Specified Test. A red color develops.
(d)Specified Test. A white precipitate is formed.
(e)It complies with water.
Solubility
Very soluble in water, freely soluble in ethanol (96%)
Appearance of solution
The solution is clear and colorless or not more intensely colored than reference solution Y7, BY7 or GY7
Readily Carbonisable Substances
Specified Test.
Oxalic Acid
Not more than 360 ppm, calculated as anhydrous oxalic acid.
Sulfate
Not more than 150 ppm
Water
Between 7.5% to 9.0%
Sulfated Ash
Not more than 0.1%
Assay
Not less than 99.5% and not more than 100.5% (anhydrous substances)