Cramer Structural Classification Tiers for Non-Intentionally Added Substances
Assigning non-intentionally added substances to Cramer tiers determines analytical screening limits, where Class III migrants require migration caps under 90 ppb.
OECD QSAR Toolbox
Meaning
A collaborative software platform designed to fill gaps in toxicity data for chemical substances by grouping them into categories and using read-across methods forms the basis for non-testing safety assessments of plastic additives. The OECD QSAR Toolbox allows polymer chemists to estimate the hazardous properties of novel monomers, colorants, and plasticisers before physical synthesis begins. By leveraging existing chemical datasets, the software accelerates the screening of raw materials.
This process reduces the need for expensive and time-consuming in vivo toxicological tests.
Chemical Prediction
Molecules can be compared based on their structural similarities and reactive mechanisms within the database. The OECD QSAR Toolbox uses these profiles to find existing chemicals with known toxicological endpoints to estimate the risk of the target compound. This method works well for forecasting the potential mutagenicity or sensitization of polymer additives.
Regulatory Evaluation
Compliance officers in the packaging industry utilize the software to satisfy registration requirements under chemical regulations like REACH. Using output from the OECD QSAR Toolbox simplifies the authorization process for food-contact polymer grades. This application is particularly helpful when testing data are unavailable.
Sourcing Impact
Raw material costs fall when developers can disqualify toxic chemical candidates early in the development cycle. Using the OECD QSAR Toolbox prevents the formulation of polymers with additives that are later banned or restricted. This screening creates a safer supply chain.