OECD TG-120 Solution/Extraction Behaviour of Polymers in Water
OECD GLP Physical-Mechanical Test
WESHIN INSPECTION TECH CO., LTD_

OECD TG 120: Solution/Extraction Behavior of Polymers in Water

 

Assessing the aqueous stability of polymers to ensure environmental safety and regulatory alignment.
 

The extent to which a polymer dissolves or releases components in water is a critical factor in its environmental risk profile. At Weshin Inspection Tech , we conduct rigorous studies following OECD Test Guideline 120 (TG 120) to determine the water-soluble fraction and the extraction behavior of polymeric substances.

 

The Importance of Solution/Extraction Testing

 

Determining the aqueous extractability is a foundational requirement for the regulatory management of polymers globally:

  • Identification of Extractables: Quantifying the release of low molecular weight species, residual monomers, or additives into the aquatic phase.

  • Regulatory Compliance: Providing essential data for REACH polymer notifications and supporting "Polymer of Low Concern (PLC)" status claims.

  • Environmental Fate Assessment: Evaluating the potential for bioavailable components to leach from the polymer matrix during its lifecycle.
     

Our Testing Capabilities

 

Weshin Inspection Tech employs a comprehensive analytical approach as outlined in TG 120:

  • Controlled Extraction: Subjecting the polymer (in standardized particle size) to aqueous media under constant temperature and agitation for defined durations.

  • Total Dissolved Mass (TDM): Utilizing Gravimetric analysis or Total Organic Carbon (TOC) to quantify the overall solubility.

  • Characterization of Extractants: Using GPC/SEC to determine the molecular weight distribution of the dissolved fraction and HPLC/GC-MS for the identification of specific chemical species.
     

Why Partner with Weshin Inspection Tech?

 

  • Tailored Sample Preparation: Expert handling of various polymer forms, including pellets, powders, and films, to ensure representative surface area exposure.

  • Precision Analytics: Our laboratory is equipped with high-sensitivity instrumentation to detect and quantify even trace levels of aqueous extractables.

  • Comprehensive Documentation: Our test reports are structured for direct submission to regulatory bodies, providing all necessary data on solubility limits, pH changes, and molecular profiles.


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