Difference between revisions of "Bisphenol-A"
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{{Definition|title=Bisphenol-A | {{Definition|title=Bisphenol-A | ||
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| − | The total amount of bisphenol-A manufactured in 2005 within the EU was estimated at approximately 1.150.000 tonnes. This large amount was mainly produced to manufacture polycarbonate, witch is a widely used plastic | + | The total amount of bisphenol-A manufactured in 2005 within the EU was estimated at approximately 1.150.000 tonnes. This large amount was mainly produced to manufacture polycarbonate, witch is a widely used plastic<ref name="echa">[http://echa.europa.eu/doc/trd_substances/4_4_isopropylidene_diphenol_bisphenol_a/ann_xv_trd/trd_uk_bisphenol_a.pdf ECHA 2008 ANNEX XV RESTRICTION REPORT Bisphenol-A]</ref>. |
| − | + | Bisphenol A is moderately soluble in water (300 mg/l), it is considered to have a moderate tendency to [[adsorption|adsorb]] to suspended particles and sediments. It has a very low tendency to evaporate into the atmosphere where most of it will be degraded in less than a day. In water and soils it is chemically stable, although it can readily be biodegraded. The environmental [[half-life]] is only 3 to 8 days and a 100% removal of environmental contamination can occur within 17 days. In [[anoxic]] sediments bisphenol A can be created from the degradation of [[Tetrabromobisphenol A|TBBP-A]]<ref name="en">[http://ecb.jrc.it/documents/Existing-Chemicals/RISK_ASSESSMENT/ADDENDUM/bisphenola_add_325.pdf February 2008 Updated European Risk Assessment Report 4,4’-ISOPROPYLIDENEDIPHENOL (BISPHENOL-A)]</ref>. | |
| − | Bisphenol A has a low tendency to [[bioaccumulation|bioaccumulate]]. Therefore | + | Bisphenol A has a low tendency to [[bioaccumulation|bioaccumulate]]. Therefore it poses a low toxicity threat by [[biomagnification]] towards marine mammals. Bisphenol A becomes lethal when mammals consume each day more than 33 mg of it per kg of body weight<ref name="en">[http://ecb.jrc.it/documents/Existing-Chemicals/RISK_ASSESSMENT/ADDENDUM/bisphenola_add_325.pdf February 2008 Updated European Risk Assessment Report 4,4’-ISOPROPYLIDENEDIPHENOL (BISPHENOL-A)]</ref>. |
| − | + | Bisphenol A exhibits [[endocrine disrupting compounds|endocrine disrupting effects]]. In [http://www.marinespecies.org/aphia.php?p=taxdetails&id=101 gastropods] concentrations bellow 100 µg/l have been shown to cause reduced penis sizes in males and enhanced oocyte production in females. The latter results in an increased embryo production at low bisphenol A concentrations. This effect has even been demonstrated in some gastropod [[species]] at concentrations of only 100 ng/l<ref name="echa">[http://echa.europa.eu/doc/trd_substances/4_4_isopropylidene_diphenol_bisphenol_a/ann_xv_trd/trd_uk_bisphenol_a.pdf ECHA 2008 ANNEX XV RESTRICTION REPORT Bisphenol-A]</ref>. It demonstrates a moderate acute [[toxic|toxicity]] towards aquatic species as most species tolerate short exposure to concentrations of 1 mg/l<ref name="pe">[http://www.pesticideinfo.org/Detail_Chemical.jsp?Rec_Id=PC33756#Related_Chems www.pesticideinfo.org August 24 2009]</ref>. | |
| − | Bisphenol A exhibits [[endocrine disrupting compounds|endocrine disrupting effects]]. In [http://www.marinespecies.org/aphia.php?p=taxdetails&id=101 gastropods] concentrations bellow 100 µg/l have been shown cause reduced penis sizes in males and enhanced oocyte production in females. The latter results in an increased embryo production at low bisphenol A concentrations. | ||
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==References== | ==References== | ||
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| + | {{author | ||
| + | |AuthorID=19826 | ||
| + | |AuthorFullName=Daphnis De Pooter | ||
| + | |AuthorName=Daphnisd}} | ||
| − | [[Category: | + | [[Category:Toxicity chemicals]] |
Latest revision as of 13:03, 9 August 2020
Definition of Bisphenol-A:
Bisphenol-A is also known as 4,4’-Isopropylidenediphenol. At room temperature it occurs as a white powder or in flakes[1].
This is the common definition for Bisphenol-A, other definitions can be discussed in the article
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Notes
| Bisphenol-A |
|---|
|
| Formula |
| C15H16O2 |
The total amount of bisphenol-A manufactured in 2005 within the EU was estimated at approximately 1.150.000 tonnes. This large amount was mainly produced to manufacture polycarbonate, witch is a widely used plastic[2].
Bisphenol A is moderately soluble in water (300 mg/l), it is considered to have a moderate tendency to adsorb to suspended particles and sediments. It has a very low tendency to evaporate into the atmosphere where most of it will be degraded in less than a day. In water and soils it is chemically stable, although it can readily be biodegraded. The environmental half-life is only 3 to 8 days and a 100% removal of environmental contamination can occur within 17 days. In anoxic sediments bisphenol A can be created from the degradation of TBBP-A[1].
Bisphenol A has a low tendency to bioaccumulate. Therefore it poses a low toxicity threat by biomagnification towards marine mammals. Bisphenol A becomes lethal when mammals consume each day more than 33 mg of it per kg of body weight[1].
Bisphenol A exhibits endocrine disrupting effects. In gastropods concentrations bellow 100 µg/l have been shown to cause reduced penis sizes in males and enhanced oocyte production in females. The latter results in an increased embryo production at low bisphenol A concentrations. This effect has even been demonstrated in some gastropod species at concentrations of only 100 ng/l[2]. It demonstrates a moderate acute toxicity towards aquatic species as most species tolerate short exposure to concentrations of 1 mg/l[3].
Environmental standards and legislation
Included in the water framework list of priority substances
See also
Bisphenol-A on the ED North Database
Bisphenol-A on the Ecotox Database
References
Please note that others may also have edited the contents of this article.
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