2,4,6-tri-tert-butylphenol: verschil tussen versies

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Regel 17: Regel 17:
 
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Less than 50 tonnes of 2,4,6-tri-''tert''-butylphenol are used in the EU each year. It can be used as an intermediate in the production of antioxidants, in rubber or plastic and as an lubricating agent in the transport sector. As an intermediate it shouldn't enter the environment unless by discharges. <ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00274_BD%202_4_6_tri_tert-butylphenol%20_2006%20version_.pdf  OSPAR Commission, 2006: OSPAR background document on 2,4,6-tri-''tert''-butylphenol]</ref>
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Less than 50 tonnes of 2,4,6-tri-''tert''-butylphenol are used in the EU each year. It can be used as an intermediate in the production of antioxidants, in rubber or plastic and as an lubricating agent in the transport sector. As an intermediate it shouldn't enter the environment unless by discharges<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00274_BD%202_4_6_tri_tert-butylphenol%20_2006%20version_.pdf  OSPAR Commission, 2006: OSPAR background document on 2,4,6-tri-''tert''-butylphenol]</ref>.
  
 
It is a chemical with a low [[volatile|volatility]], making it unlikely that it enters the atmosphere, where it would be degraded rapidly. It has a low water solubility (0,521 mg/l) and a strong tendency to [[adsorption|adsorb]] to soils and sediments. Both in water and sediments, it isn't readily (bio)degraded and considered [[persistent]].   
 
It is a chemical with a low [[volatile|volatility]], making it unlikely that it enters the atmosphere, where it would be degraded rapidly. It has a low water solubility (0,521 mg/l) and a strong tendency to [[adsorption|adsorb]] to soils and sediments. Both in water and sediments, it isn't readily (bio)degraded and considered [[persistent]].   
Regel 23: Regel 23:
  
 
In fresh water is has been shown to be acutely [[toxic]] for fish and for algae at concentrations above 0,061 mg/l and 0,033 mg/l respectively.  
 
In fresh water is has been shown to be acutely [[toxic]] for fish and for algae at concentrations above 0,061 mg/l and 0,033 mg/l respectively.  
There is currently little information available on the levels of 2,4,6-tri-''tert''-butylphenol in the marine environment. It has been estimated (by modelling the emissions) that concentrations might reach 0,32 µg/l.<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00274_BD%202_4_6_tri_tert-butylphenol%20_2006%20version_.pdf  OSPAR Commission, 2006: OSPAR background document on 2,4,6-tri-''tert''-butylphenol]</ref>
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There is currently little information available on the levels of 2,4,6-tri-''tert''-butylphenol in the marine environment. It has been estimated (by modelling the emissions) that concentrations might reach 0,32 µg/l<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00274_BD%202_4_6_tri_tert-butylphenol%20_2006%20version_.pdf  OSPAR Commission, 2006: OSPAR background document on 2,4,6-tri-''tert''-butylphenol]</ref>.
 
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Versie van 2 okt 2009 om 11:51

Definition of 2,4,6-tri-tert-butylphenol:
2,4,6-tri-tert-butylphenol is a chemical which has been confused with an other chemical called dodecylphenol which has the same molecular formula but a different structure[1].
This is the common definition for 2,4,6-tri-tert-butylphenol, other definitions can be discussed in the article

Notes

2,4,6-tri-tert-butylphenol
6PPD
Formula
C18H300

Less than 50 tonnes of 2,4,6-tri-tert-butylphenol are used in the EU each year. It can be used as an intermediate in the production of antioxidants, in rubber or plastic and as an lubricating agent in the transport sector. As an intermediate it shouldn't enter the environment unless by discharges[1].

It is a chemical with a low volatility, making it unlikely that it enters the atmosphere, where it would be degraded rapidly. It has a low water solubility (0,521 mg/l) and a strong tendency to adsorb to soils and sediments. Both in water and sediments, it isn't readily (bio)degraded and considered persistent. It has a high tendency to bioaccumulate and is likely to biomagnify through food chains.

In fresh water is has been shown to be acutely toxic for fish and for algae at concentrations above 0,061 mg/l and 0,033 mg/l respectively. There is currently little information available on the levels of 2,4,6-tri-tert-butylphenol in the marine environment. It has been estimated (by modelling the emissions) that concentrations might reach 0,32 µg/l[1].


Environmental standards and legislation

Included in the OSPAR list of substances of priority action


See also

OSPAR background document on 2,4,6-tri-tert-butylphenol


References

  1. 1,0 1,1 1,2 OSPAR Commission, 2006: OSPAR background document on 2,4,6-tri-tert-butylphenol