Halogens are 5 non-metallic elements found in group VIIA of the periodic table (Fluorine, Chlorine, Bromine, Iodine, Astatine)
Halogen means “salt former” and compounds containing halogens are called “salts”. Halogens exist, at room temperature, in all 3 states of matter –
Solid – Iodine, Astatine
Liquid – Bromine
Gas – Fluorine, Chlorine
Why Halogen Free?
For some applications there is possibility that halogenated flame retardants (HFRs) in plastic materials will release corrosive & toxic gases if ignited in a fire.
The corrosive element of these gases has the potential to damage electronics wherever the smoke travels. The toxic element can be potentially hazardous to
human and animal life. Thus, some indurtrial or customers trend to put the requirement of HF; Halogen Free.
Basic Halogen Free Specification and Standard
900 ppm maximum Cl
900 ppm maximum Br
1500 ppm maximum for total Halogens (Br+Cl)
(This Halogens free Standards include Bromine and Chlorine only)