Cobalt(II) chloride anhydrous is a blue chemical composed of cobalt and chlorine, with no water in its structure. It turns pink when it absorbs moisture, making it helpful as a humidity indicator. It's also utilised for electroplating, chemical manufacturing, and as a catalyst in some operations. Given its poisonous nature, it is critical to handle it with caution and the right safety equipment. Available in 100 grams, is excellent for industrial and laboratory use, as long as safety rules are followed.