Complaint
Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061±123)Jmol-1. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. An investigation of its crystal growth kinetics indicates dat growth is linearly dependent on size.
| Item | Standard |
| Appearance | White particle or White crystalline powder |
| Assay (%) | 99.5-100.5 |
| Light Transmittance (%) | ≥ 95.0 |
| Moisture (%) | 7.5-9.0 |
| Readily Carbonisablle Substance | ≤ 1.0 |
| Sulphated Ash (%) | ≤ 0.05 |
| Chloride (%) | ≤ 0.005 |
| Sulphate (%) | ≤ 0.015 |
| Oxalate (%) | ≤ 0.01 |
| Calcium (%) | ≤ 0.02 |
| Iron (mg/kg) | ≤ 5 |
| Arsenic (mg/kg) | ≤ 1 |
| Lead | ≤0.5 |
| Water Insoluble Substances | Filtration time not more than 1 min; Filter membrane basically doesn't change color; Visual mottled particles not more than 3. |
| Packing | 25kg/bag |
