Citric Acid is white or almost white, crystalline powder, colourless crystals or granules, mainly used as acidulant, flavoring agent, preservative and antistaling agent in food and beverage industry. It is also used as antioxidant, plasticizer and detergent in chemical, cosmetics and cleaning industries.
Molecular Formula: C6H8O7
Molecular Weight: 192.1
CAS No.: 77-92-9
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Parameter |
Standard |
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Characters |
White or almost white, crystalline powder, colourless crystals or granules. Odorless, has a strongly acid taste. Very soluble in water, freely soluble in ethanol. |
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Identification |
Passes Test |
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Appearance of Solution |
Passes Test |
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Assay |
99.5-100.5 % |
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Water |
≤0.2 % |
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Readily Carbonisable Substances |
A≤0.52 |
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T≥30% |
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Sulphated Ash |
≤0.05 % |
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Sulphates |
≤150 ppm |
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Oxalates |
≤100 ppm |
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Calcium |
≤75 ppm |
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Iron |
≤5 ppm |
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Aluminum |
≤0.2 ppm |
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Arsenic |
≤1 ppm |
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Lead |
≤0.5 ppm |
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Mercury |
≤1 ppm |
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Heavy Metals (as Pb) |
≤5 ppm |
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Bacterial Endotoxins |
＜0.5 IU/mg |
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Volatile Organic Impurities |
Passes Test |