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Citric acid monohydrate
Published：2010-06-03 14:38:13 Hits： ( 4581 )
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Quality Standards of Citric Acid Monohydrate |
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Item |
Unit |
BP 2009 |
USP 32 |
FCC 6 |
E 330 |
GB1987-2007 |
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Characters |
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White Crystalline Powders,Colorless Crystals or Granules |
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Identification |
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Pass Test |
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Color & Clarity of Solution |
|
Pass Test |
Pass Test |
/ |
Pass Test |
/ |
|
Assay |
% |
99.5-100.5 |
99.5-100.5 |
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Water |
% |
7.5-9.0 |
7.5-9.0 |
≤8.8 |
7.5-8.8 |
7.5-9.0 |
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Light Transmittance |
% |
/ |
/ |
/ |
/ |
≥95 |
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Calcium |
ppm |
/ |
/ |
/ |
≤75 |
≤200 |
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Iron |
ppm |
/ |
/ |
/ |
≤5 |
≤5 |
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Arsenic |
ppm |
/ |
/ |
/ |
≤1 |
≤1 |
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Mercury |
ppm |
/ |
/ |
/ |
≤1 |
/ |
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Heavy Metals |
ppm |
≤10 |
≤10 |
/ |
≤5 |
/ |
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Oxalate |
ppm |
≤360 |
≤360 |
Pass Test |
≤100 |
≤100 |
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Chloride |
ppm |
/ |
/ |
/ |
/ |
≤50 |
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Sulphate |
ppm |
≤150 |
≤150 |
/ |
≤150 |
≤150 |
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Readily Carbonisable Substances |
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Not Darker than Standard |
Not Darker than Standard |
Pass Test |
Pass Test |
≤1.0 |
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Sulphated Ash |
% |
≤0.1 |
≤0.1 |
≤0.05 |
≤0.05 |
≤0.05 |
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Volatile Organic Impurities |
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/ |
/ |
Pass Test |
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Tridodecylamine |
mg/kg |
/ |
/ |
≤0.1 |
|
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Lead |
ppm |
/ |
/ |
≤0.5 |
≤0.5 |
≤0.5 |
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Aluminum |
ppm |
≤0.2 |
≤0.2 |
/ |
/ |
/ |
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Bacterial Endotoxins |
IU/mg |
<0.5 |
Pass Test |
/ |
/ |
/ |
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Water Insoluble Substances |
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/ |
/ |
/ |
/ |
Filtration time not more than 1 min;
Filter membrane basically doesn't change color;
Visual mottled particles not more than 3. |
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