Halogen Free – halogens are group of elements that include chlorine, fluorine, bromine, iodine and astatine, which are often used in the production of electronics and plastics. According to International Electrochemical Commission IEC 61249-2-21, for a material to be considered halogen-free, it must contain no more than 900 ppm chlorine or bromine and also have less than 1500 ppm total halogens.
