Iodine-131 (I-131) Radioisotope

Radioactive iodine (I-131), an isotope of iodine that emits radiation, is used for medical purposes. When a small dose of I-131 is swallowed, it is absorbed into the bloodstream in the gastrointestinal (GI) tract and concentrated from the blood by the thyroid gland, where it begins destroying the gland’s cells. Radioactive iodine I-131 may also be used to treat thyroid cancer.

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Quality Control

Chemical Form : NaI131 in 0.05M NaOH
Activity Concentration : F I     1120.72 mCi/ml
F II    250.02 mCi/ml
Specific Activity : Carrier Free
Radiochemical purity : > 95%

Iodine 131 > 99.9%
Iodine 126 < 0.01%

pH : 10 – 12