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!
Generally, standard overnight is later the next day, while priority gives you an earlier in the day delivery, often in the morning by 10:30 am. Sometimes it will be by noon. The actual physical location will determine the time. Go to a FedEx Office location and you can get the actual time from where you are. Standard Overnight (SO) shipments typically have a next-day, 3.30 pm delivery time commitment (to most places). Priority Overnight (PO) have a next-day, 10.30 am time commitment.