Use Gloves while Handling the Liquid.
It will stain skin, clothes, countertops, floors, and instruments brown or black. Refer to the following for stain removal:
For skin: Wash immediately with water, soap, ammonia, or iodine tincture, and then rinse thoroughly with water. Do not use excessive methods in an attempt to remove difficult stains from the skin as the stains will eventually fade.
For Clothing/Countertops/Floors/Instruments: use the same procedures as with stained skin. Difficult stains may be treated with sodium hypochlorite.