CAS No.: | 77-92-9 |
---|---|
Formula: | C6h8o7 |
EINECS: | 201-069-1 |
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Item
|
Standard
|
Appearance
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Colorless or white crystals or powder, odorless and tastes sour.
|
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)
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≤ 5
|
Arsenic (mg/kg)
|
≤ 1
|
Lead
|
≤0.5
|
Water Insoluble Substances
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Filtration time not more than 1 min;
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Filter membrane basically doesn't change color;
|
|
Visual mottled particles not more than 3.
|