 |
 |
| Test |
Specification |
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 |
| Assay |
10.0 to 11.0% as iron |
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 |
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|
| Description |
Greenish white to green-yellow powder and odorless |
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| Purity |
|
| 1) Sulfate |
NMT 0.48% as SO4 |
| 2) Ferric salt |
A red color may develop but disappears. |
| 3) Heavy metals, Pb |
NMT 20 ppm as Pb |
| 4) Arsenic |
NMT 4.0 ppm as As2O3 |
| 5) Tartaric acid |
A white crystalline precipitate is not formed. |
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| Storage |
Store in light-resistant containers. Use immediately after the container is opened. |
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| Expiry date |
Two years after the manufacturing date, if the container remains sealed |
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