Chemical migration into food an overview

Any chemical migration into food is important because it can have two impacts on the food. 

For some food-package combinations the concentration of chemical migrants in the food can approach that of substances used as direct food additives, at levels of tens of parts-per-million (mg substance per kg of food, mg/kg). Therefore, all parties involved in the production, transport, selling and consumption of foods need to be aware of the potential for chemical migration and ways of minimising it. Everyone involved needs to ensure that packaging materials are correctly specified and used for the intended application so that there is no excessive chemical migration. The chain of care involves  

The correct specification and use of packaging materials requires effective exchange of information up and down this chain of use. It also requires an understanding of chemical migration and the main factors that control it. 

2 Chemical migration and the main factors that control it 

The nature and extent of any contact between the packaging and the food is the next important parameter to consider. This depends on the physical 

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