Citric acid monohydrate - 27491
Code: 27491
Citric acid monohydrate
Tested according to European Pharmacopoeia
Acidum citricum monohydricum
Tested according to Ph.Eur.
CAS Number: 5949-29-1
Linear Formula: HOC(COOH)(CH2COOH)2 · H2O
Molar Mass: 210.14 g/mol
Beilstein Registry Number: 4018641
MDL Number: MFCD00149972
| Property |
Value |
| Identity (IR) |
complying |
| Assay (calculated on the anhydrous basis) |
99.5 - 100.5 % |
| Appearance of the solution |
complying |
| Sulfated ash |
max. 0.1 % |
| Water (Karl Fischer) |
7.5 - 9.0 % |
| Heavy metals (as Pb) |
max. 10 ppm |
| Sulfate (SO4) |
max. 150 ppm |
| Reaction against H2SO4 |
complying |
| Readily carbonisable substances |
complying |
| Oxalate (as Oxalic acid) |
max. 360 ppm |
| Residual solvents |
complying |
| Property |
Value |
| PKa |
(1) 3.13, (2) 4.76, (3) 6.4 |
| Freezing point |
135 - 152 °C |
| Density |
1.54 g/cm3 |