3-methylbut-2-en-1-ol

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP -Guideline study

Data source

Reference

Reference 1

Reference Type:

study report

Title:

Unnamed

Year:

1988

Report date:

1988

Reference 2

Reference Type:

study report

Title:

Unnamed

Year:

1992

Report date:

1992

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

3-methylbut-2-en-1-ol

EC Number:

209-141-4

EC Name:

3-methylbut-2-en-1-ol

Cas Number:

556-82-1

Molecular formula:

C5H10O

IUPAC Name:

3-methylbut-2-en-1-ol

Details on test material:

- Name of test material (as cited in study report): 3-Methylbuten-2-ol-1 (Prenol)
- Analytical purity: no data

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, domestic (adaptation not specified)

Details on inoculum:

- Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge from a laboratory waste water treatment plant  using municipal sewage
- Concentration of sludge: 30 mg/l 

Duration of test (contact time):

28 d

Initial test substance concentration

Initial conc.:

100 mg/L

Based on:

test mat.

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation:

O2 consumption

Reference substance

Reference substance:

aniline

Results and discussion

% Degradation

Parameter:

% degradation (O2 consumption)

Value:

80 - 90

Sampling time:

28 d

Details on results:

DOC-Elimination after 28 days: 90-100 %

According to original report (BASF AG (1988)):
Lag-phase = 2 days, degradation phase = 8 days
TOC: 698 mg/g,
DOC: 1050 mg/g (direct), BOD5 = 1343 mg/g, ThOD: 2605 mg/kg
BOD/ThOD-values >60% within 10 days indicate ready biodegradability.

Degradation of aniline
BOD: > 60 %, DOC-elimination: 96 %, lag phase: 3 days, degradation phase: 6 days

Kinetic of test substance (in %):
= 14 after 3 day(s)
= 56 after 7 day(s)
= 65 after 10 day(s)
= 69 after 17 day(s)
= 78 after 21 day(s)
Kinetic of control substance (in %):
= 60 ... 70 after 28 day(s)

Any other information on results incl. tables

The test substance parallels were all degraded to a value > 80 %. By  choosing the test substance with the lowest amount of degradation after  28 days (80.4 %), one can assume this test to be valid.

Applicant's summary and conclusion

Interpretation of results:

readily biodegradable