Medical Supplies

Introduction To Extractables And Leachables


What are Extractables and Leachables? Extractables are substances that can be extracted from a material, while leachables are substances that can be leached. Extractable is the broader term, but it’s often used interchangeably with leachable. Neither word has any formal meaning in chemistry or environmental science.

– Extractables are residual compounds that can be extracted from a material when exposed to certain conditions. Extractables include unreacted starting materials (i.e., impurities) and degradation products, which could come from either the original substance or simply exposure to heat.

– Leachables are extractables that have been dissolved in a solvent. Extractable and leachable are often used interchangeably, but they’re not exactly the same thing. leachables can be leachable without being extractable, and this is done by using special techniques to change the chemical bond.

– The difference between “extract” and “leach” might seem like splitting hairs, but they’re actually different processes. Extractables and Leachables are terms associated with consumer products such as personal care items like shampoo & conditioner, detergents, scented candles, and more. Extractables are the ingredients that transfer from a container into a solution when it is shaken or used. At the same time, leachables are those ingredients transferred by being dissolved in water alone.

Extractables are not leachable without being extractable, but they can be both!