This substance is an anhydrous salt. It is yellowish, although it can sometimes appear green and powdery. Nickel chloride is considered a deliquescent, which means that it absorbs moisture from the air to form a solution. As such, it should be stored and sealed sufficiently to keep it pure.
Nickel chloride is not utilized for many applications, but it can be part of the production of a variety of other chemicals. Because it is so sensitive to exposure to the air, it can change rapidly once it is out of its container. Another use of nickel chloride is electroplating.
Nickel chloride is hazardous to humans and must be handled with care and caution. It can be an irritant to the skin and eyes, so gloves and goggles should be worn at all times. Also, because of how it reacts with the air, nickel chloride should always be sealed properly and stored in a cool, dry area.