2 June: ISO Flame Retardant codes

Consultation open to modify ISO 1043 with more precise code definitions of nitrogen and organo-phosphorus FRs. The proposed amendment will modify ISO 1043-4:2021 “Plastics - Symbols and abbreviated terms - Part 4: Flame retardants” concerning only the codes for “Nitrogen” and “Organo-phosphorus” flame retardant compounds.

For Nitrogen compounds, the current two codes become six: melamine, urea, monomeric melamine-based compounds (melamine salts), polymeric melamine-based compounds, N-alkoxy hindered amine-based compounds, other nitrogen-based compounds.
For Organo-phosphorus, the current three codes become five: aryl phosphates, chlorinated organic phosphorus compounds, brominated organic phosphorus compounds, methyl esters of phosphoric or phosphonic acid, other halogen-free organic phosphorus compounds.

Input to the consultation is only via national standards organisations (ISO members).

Current most up-to-date standard: ISO 1043-4:2021 “Plastics - Symbols and abbreviated terms - Part 4: Flame retardants” available for 10€ from the EESTI Estonia standards organisation (or different prices from other national organisations) https://www.evs.ee/en/evs-en-iso-1043-4-2021

ISO website: https://www.iso.org/standard/91076.html

Proposed amendments can be read here (but not downloaded): https://komport.evs.ee/Default.aspx?s=standardCommenting&doc=18765