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Diss Factsheets

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Results of monitoring programmes without detailed documentation

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1994

Materials and methods

Principles of method if other than guideline:
The concentration of 2,6-di-tert-butyl-p-cresol (BHT) was measured in four different environmental locations: River Rhine at Karlsruhe and Öhningen, River Rhine at Mannheim, River Neckar at Mannheim, and River Donau at Ulm.
GLP compliance:
not specified
Type of measurement:
background concentration
Media:
surface water

Test material

Constituent 1
Chemical structure
Reference substance name:
2,6-di-tert-butyl-p-cresol
EC Number:
204-881-4
EC Name:
2,6-di-tert-butyl-p-cresol
Cas Number:
128-37-0
Molecular formula:
C15H24O
IUPAC Name:
2,6-di-tert-butyl-4-methylphenol

Results and discussion

Concentrationopen allclose all
Country:
Germany
Location:
River Rhine at Karlsruhe and Öhningen (Baden-Württemberg)
Substance or metabolite:
substance
Remarks:
2,6-di-tert-butyl-p-cresol (BHT)
Conc.:
0 - < 1 µg/L
Remarks on result:
other: Substance concentration is below the environmental limit.
Country:
Germany
Location:
River Rhine at Mannheim
Substance or metabolite:
substance
Remarks:
2,6-di-tert-butyl-p-cresol (BHT)
Conc.:
0.02 - 0.09 µg/L
Country:
Germany
Location:
River Neckar at Mannheim
Substance or metabolite:
substance
Remarks:
2,6-di-tert-butyl-p-cresol (BHT)
Conc.:
0.02 - 0.09 µg/L
Country:
Germany
Location:
River Donau at Ulm
Substance or metabolite:
substance
Remarks:
2,6-di-tert-butyl-p-cresol (BHT)
Conc.:
0.02 - 0.09 µg/L

Any other information on results incl. tables

RS-Freetext:
BHT concentrations determined in River Rhine at Karlsruhe
and Öhningen (Germany, Baden-Württemberg) during July -
December 1990 were consistently below the determination limit of 1 ug/l.

More refined measurements were conducted by the
Baden-Württemberg water authorities in River Rhine at
Mannheim, in River Neckar at Mannheim, and in River Donau at
Ulm during January - December 1991; the determination limit
was in all cases 0.02 ug/l:

Rhine: <0.02-0.09 ug/l
        50 percentile: < 0.02 ug/l
	90 percentile: 0.08 ug/l

Donau: <0.02-0.16 ug/l
	50 percentile: 0.03 ug/l
	90 percentile: 0.09 ug/l

Neckar: <0.02-0.09 ug/l
	50 percentile: 0.02 ug/l

	90 percentile: 0.08 ug/l

Applicant's summary and conclusion

Conclusions:
At four different locations of Baden-Württemberg (Germany) the concentration of 2,6-di-tert-butyl-p-cresol (BHT) was measured in water. In none of the cases the measured concentration exceeded the given limit of 1 µg/L in the environment (Landesamt für Umweltschutz Baden-Württemberg, 1994).
Executive summary:

The concentration of 2,6-di-tert-butyl-p-cresol (BHT) was measured in four different environmental locations: River Rhine at Karlsruhe and Öhningen, River Rhine at Mannheim, River Neckar at Mannheim, and River Donau at Ulm (Germany). The measurements were published by Landesanstalt für Umweltschutz Baden-Württemberg in a personal comunication to BUA in 1994. In none of the cases the concentration of the active substance exceeded the limit of 1 µg/L in the environment.