Definitions for "Phthalates"
Keywords:  phthalic, pvc, dehp, ester, pthalates
In Dec 2002 researchers found high levels of chemicals called phthalates in some well-known perfumes and toiletries. These chemcials, already known to contribute to male infertility and to cause genital abnormalities in mice and rats, were found in 34 products. Genital abnormailities such as undescended testicles, malformations of the urinary tract and hypospadias now occur in 4 per cent of baby boys. Prostate damage, and reduced sperm numbers and motility are on the rise amoung adult men.
A family of chemicals, produced from phthalic anhydride and alcohols, frequently used as plasticisers to give flexibility to PVC.
A group of chemicals made by the reaction of alcohols with phthalic acid. This kind of chemicals are called esters, or in this case phthalic esters or shortly phthalates. Phthalates among others can be mixed with PVC, to make it flexible. They are also used in printing inks and glues and rubber. Depending of the type of alcohol, used to make the ester, different properties are obtained for different applications. A rather high volatility is the result, if short-chained alcohols are used like in dibutylphthalate (mainly used in printing inks, but also found in the odour components of lovage and selery), while the phthalates used in PVC mainly have a low volatility. The bulk of phthalates, used in soft PVC are DEHP (di-ethylhexylphthalate) and DINP (di-isononylphthalate).