What is the definition of Halogen Free for a PC?

Answer 1

Halogens are the five nonmetallic elements found in Group 7 of the Periodic Table. They are Fluorine, Chlorine, Bromine, Iodine, and Astatine. They are added to plastics and other materials to add certain properties such as making things flame retardant. So halogen-free means not containing those five elements. According to industry standards, something is considered "halogen free" if:

1. there are less than 1000 ppm of antimony trioxide.
2. there are less than 900 ppm of chlorine in homogeneous materials.
3. there are less than 900 ppm of bromine in homogeneous materials.
4. the total amount of chlorine and bromine will not exceed 1500 ppm in homogeneous materials.