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Description
Citric acid
1.Molecular formula: C6H8O7
CAS: 5949-29-1
Appearance: Colorless crystal
2.Properties:
Colorless crystalline, often contain a molecular gesso, odurless, have very strong acidity, soluble in water. The calcium salt in cold water, hot water is easy dissolve than the properties are used to identification and separation citric acid. Crystallization control when the appropriate temperature can be obtained without water citric acid.
3.Use:In industry, food, cosmetic industry etc has very many purposes.
4.Specification:
Test item | Specification | |
Reagent grade | Pharmaceutical grade | |
Appearance | Conform | Conform |
Assay [C6H8O7] / | ≥99.8 | ≥99.0 |
Clarify degrees test | Conform | Conform |
Water insoluble/% | ≤0.005 | ≤0.01 |
Burning residua (SO4) /% | ≤0.02 | ≤0.07 |
Chloride (Cl) /% | ≤0.0005 | ≤0.005 |
Sulfate (SO4)/% | ≤0.005 | ≤0.02 |
Phosphate (PO4)/% | ≤0.001 | ≤0.005 |
Oxalic acid salt (C2O4)/% | ≤0.05 | |
Calcium (Ca) /% | ≤0.005 | ≤0.02 |
Ferric (Fe) /% | ≤0.0005 | ≤0.001 |
Copper (Cu) /% | ≤0.0005 | |
Lead (Pb) /% | ≤0.0005 | ≤0.001 |
Easy carbonized material | Conform |
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Citric acid