1. Chemistry experiments 9 March 2011

2. A glass bottle A plastic bottle type of material Glass of natrium and silicium PET subsistence Does not change with other materilas Dangerous for our health because of what it contains=additives

3. Chemical structureSiO2 Na2O, K2O CaO, MgO Al2O3SO3Fe2O3B2O3%73,015,010,01,00,20,05 do 0,5 PET

4. Adds in plastic bottles antioxidants antioxidants metal deactivators metal deactivators UV stabilizators UV stabilizators softeners softeners slide elements slide elements materials for strenthning materials for strenthning colour adds colour adds adds against fire adds against fire antistatic adds antistatic adds

5. Be alert… At higher temperature and when the plastic is old, dangerous elements get into food. These elememnts are: bisphenol A phthalates

6. Bisphenol A = BPA Chemistry name is 4,4-dihydroxy-2,2- diphenylpropane.

7. Why is BISPHENOL A dangerous? Its structure resembles woman’s hormone. Its structure resembles woman’s hormone. It causes obsrtuction in hormonal system.. It causes obsrtuction in hormonal system.. It is possible that it causes trouble with pregnancy, secretion of insuline which can lead to diabetes… It is possible that it causes trouble with pregnancy, secretion of insuline which can lead to diabetes… Causes breathing problems. Causes breathing problems. Can cause problems with allergies of skin. Can cause problems with allergies of skin.

8. Phthalates Chemically are also known as phthalate esters. They are used to soften plastic. They are most often added to PVC.

9. Why are phthalates dangerous? They are not bound to plastic and can get out of plastic materials. They are not bound to plastic and can get out of plastic materials. They get into the body by breahting, through skin and by eating… They get into the body by breahting, through skin and by eating… Longlastin and chronical exposure to phthalates can damage livers, kiddneys and organs for reproduction… Longlastin and chronical exposure to phthalates can damage livers, kiddneys and organs for reproduction…

10. TYPES OF PLASTICS International mark The name of plastic material abbreviation polietilentereftalatPET/PETE polietilen high density HDPE/HDP PolivinilkloridPVC/V

11. International mark The name of plastic material abbreviation polietilen low density LDPE/LDP Polipropilen=polipropenPP polistirenPS polikarbonat or different types of plastic PC/PLA/OSTALO

12. It is good…

13. Warn for you… Do not use old plastic bottles. Do not use plastic with this mark on it.

14. March 1 st 2011 EU countries banned the plastic bottles which contain bisphenol A that are used for babies. Will not be sold. June 1 st 2011 June 1 st 2011 Countries are going to ban the sale and import of plastic bottles that contain bysphenol A. Will be stopped.