2,6-di-tert-butyl-p-cresol

Monitoring data

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

Test material information

Constituent 1

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

Concentration

Concentration 1

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.

Concentration 2

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

Concentration 3

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

Concentration 4

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.