Greige Fabric Certification Scope and Restricted Chemical Testing Protocols
Greige fabric certification demands batch testing of sizing agents, spin finishes, and biocide residues before finishing treatments mask regulated chemicals.
Organochlorine Pesticides
Contaminant Profile
Residual agrochemicals found in natural fibers originate from historical or current crop protection applications in cotton farming. The group of substances known as organochlorine pesticides includes well-known compounds like DDT and lindane, which are persistent in the environment. These chemicals are fat-soluble and can remain in the soil for decades after their initial use.
Fiber Transport
Cotton plants absorb these residues from the ground and concentrate them in the harvested lint. Because organochlorine pesticides are highly stable, they survive the mechanical cleaning and spinning processes used to create yarn. Testing for these compounds is a standard requirement for organic cotton certification to prove the absence of prohibited inputs.
Laboratory Screening
Gas chromatography with electron capture detection provides the sensitivity needed to find trace amounts of these poisons. Extraction of organochlorine pesticides from the fiber involves the use of organic solvents like hexane or toluene. The presence of even small amounts can trigger a failure in international ecological labels for textiles.
Eco Toxicity
Bioaccumulation of these substances in the food chain poses a risk to wildlife and human health. Restricting organochlorine pesticides in the textile supply chain supports broader efforts to reduce the global burden of persistent organic pollutants.