This substance is a white, vitreous crystalline material that is highly soluble in water. It is stable in the air and does not produce any odor or vapors. It is non-flammable and not toxic to humans in small quantities. It has a strong salty taste when mixed with water. Potassium chloride is mostly used in the production of fertilizers, as it adds essential nutrients to the soil. It can also be found as a food additive to help prevent hypokalemia, which is caused by a lack of potassium in the body. In concentrated doses, potassium chloride can be fatal and cause cardiac arrest. For this reason, it is usually included in lethal injections. Since this substance is stable and non-toxic, it does not need to be handled with caution. Gloves should be worn to prevent any skin irritation, as well as contamination of the material. It should be stored in a cool, dry area since it may absorb humidity in the air if left exposed.