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An european study performed on 450 plastic baby bottles shows that the material could release unaspected subsances.

JRC STUDY OF MATERIALS USED FOR BABY BOTTLES
JRC scientists have recently concluded a study to monitor potential migration issues arising from bottles made of different materials than polycarbonate.
It 's known that, in light of recent European Directives, by June 2011 this material is no longer usable for the production of bottles and the companies studied materials that could replace it but resorting to other types of plastics that are not always free other issues.

The study presents significant data if one considers that at the conclusion of the report, the recommendation of the JRC scientists to the official control laboratories concerns the tightening of controls on plastics substitutes currently in use.
They monitored 450 bottles made of different types of commonly used plastic (polycarbonate, polyethersulfone, polyamide, polypropylene, silicone, etc.) purchased in the entire European territory.

The results are amazing, have led to the conclusion that there is almost no release of BPA from polycarbonate bottles and BPA was detected in significant quantities in bottles of polyamide.
The bottles made of polypropylene and silicone showed the release of substances which are not included in the positive list of permitted substances to be used in contact with food (including phthalates, substances notorious for their danger), and this aspect should be taken seriously consideration in future risk assessments. In detail, no problem was found to bottles of PES (polyethersulfone) or the new polymer Tritan relation to the release of hazardous substances, although for the latter, the sample size on which it is being investigated is limited and may need a further monitoring.

An important problem for the bottles of polyamide (PA) has been identified in the migration of BPA (Bisphenol A) in substantial quantities.
Bottles made of PP (polypropylene) showed migration of substances not permitted, and in particular DIPN (di-isopropilnaftalene), a substance contained in the inks and typically in the recycled paper, present in about 45% of the 149 analyzed bottles (which could therefore result from a contamination of various leaflets printed and placed inside the bottle). Another significant problem may arise from the presence of silicone baby bottles in the growing EU market due to the migration of phthalates, found in large quantities (specifically DIBP, DBP and DEHP).
This suggests that the decision to eliminate polycarbonate from the world of baby bottles was not sufficient to solve the problems associated with the use of plastic articles like this.
Luca Foltran

NOTE ON STUDY: The conditions employed during the evaluation are the conditions prescribed by Europena Regulation 10/2011 (repealing European Directive 2002/72/EC) for food contact materials, 2 hours at 70°C.

Foltran Luca

Link to the study