This means it is only slightly harmful when dissolved in water. However, reactions with alkali metals, aluminum, mercury, fluorine or terpentine may increase the risk. Environmental risks may differ between iodine substances. The LD 50 value for rats (oral uptake) is about 14,000 mg/kg.
If you need to get it there fast, your best option is to use USPS's Priority Mail Express service! This is the fastest service offered by the USPS, with a guaranteed shipping time of 1 to 2 days, depending on the destination-or your money back!
The exact time Priority Mail delivers varies greatly on your location. Since USPS trucks leave from the specific post offices, it is impossible for them to hit all the addresses in a city at the same time. If you are near the beginning of their route, you might have your mail delivered before it is 10AM or 11AM.