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2,4,6-tri-tert-butylphenol

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Versie door Daphnisd (Overleg | bijdragen) op 27 aug 2009 om 09:46

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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 is used in the EU each year. It can be used as an intermediate in the production of antioxidants, which are used 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 unlike to enter the atmosphere, where it would be rapidly degraded. It has a low water solubility (0,521 mg/l) and a strong tendency to adsorb to soils and sediments, in both mediums 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 no information available the levels of 2,4,6-tri-tert-butylphenol in the marine environment. It is however estimated (by modelling the emissions) that concentrations might be as high as 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