Hand Blenders: Cause for Concern
A study released in October 2014 suggests that some hand (stick/immersion) blenders leak chlorinated paraffins, a type of chemical found in flame retardants, plasticizers, metal working fluids, and more. CPs are classified as toxic to aquatic organisms and carcinogenic to rats and mice. Short-chain chlorinated paraffins (SCCPs) are categorized in group 2B as "possibly carcinogenic to humans" by the International Agency for Research on Cancer.
Researchers at Stockholm University discovered the CPs while looking for environmental contaminants in cat food. The chlorinated paraffins showed up in disturbing amounts and were traced to in-house blending of the food, rather than to the food itself.