===End of use===
Synthetic fibres are from a carbon-based chemical feedstock and are considered non-biodegradable.7 <br/>Polyamide 6 and 6,6 products have the durability to last many years, however if they are discarded, could sit in the landfill for decades.
Discarded polyamide products increase load on landfills, contribute to land and water contamination and possibly toxic emissions into the air.8
<br/>When incinerated, polyamide 6 and 6,6 emit chemicals, such as nitrogen oxide, formaldehyde, hydrogen cyanide and acrolein, that are poisonous and possible carcinogens.9
==Alternatives to virgin polyamide==