2-Ethylhexan-1-ol, ethoxylated, esters with acrylic acid

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

2-{2-[(2-ethylhexyl)oxy]ethoxy}ethyl prop-2-enoate

Cas Number:

117646-83-0

Molecular formula:

C15H28O4

IUPAC Name:

2-{2-[(2-ethylhexyl)oxy]ethoxy}ethyl prop-2-enoate

Test material form:

liquid

Details on test material:

Test substance name: MI RAMER M1086
Appearance : Clear liquid
Manufacturing date: 2012-03-29
Supplier:Miwon Specialty Chemical Co., Ltd.
Receipt day: 2012-05-23
Deli very amount: 399.223 g(Gross)
Cas No.:117646-83-0
Lot No.:120329JY1
Purit y: 95.55 %
Expiration date: 2013-03-28 (Manufactured after 1 year)
Storage condition: Room temperature [(15 ~ 25)°C

Study design

Inoculum or test system:

activated sludge, domestic (adaptation not specified)

Details on inoculum:

Inoculum used in the biodegradation test was collected from 15 sites in Korea including 7 rivers, 5 domestic sewage treatmeant plants and 3 industrial wastewater treatment plants. Fresh samples collected from these sites were incubated for one month and used in biodegration test.

Duration of test (contact time):

28 d

Initial test substance concentration

Initial conc.:

100 other: 100 ppm (w/v)

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation 1

Parameter followed for biodegradation estimation:

O2 consumption

Parameter followed for biodegradation estimation 2

Parameter followed for biodegradation estimation:

test mat. analysis

Reference substance

Reference substance:

aniline

Results and discussion

% Degradation

% Degradation 1

Key result

Parameter:

% degradation (O2 consumption)

Value:

10.2

Sampling time:

7 d

% Degradation 2

Key result

Parameter:

% degradation (O2 consumption)

Value:

18.7

Sampling time:

14 d

% Degradation 3

Key result

Parameter:

% degradation (O2 consumption)

Value:

36.5

Sampling time:

28 d

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Interpretation of results:

not readily biodegradable

Conclusions:

Microbial degradation of MIRAMER M1086 was performed for 28 day following the OECD TG 301C.
The percentage biodegradtions of MIRAMER M1086 observed by BOD meter was 36.5% after 28 days. Therefore the test substance could not be concluded to be readily degradable by microorganisms in the aquatic environment.

Executive summary:

Microbial degradation of MIRAMER M1086 was performed for 28 day following the OECD TG 301C.

The percentage biodegradtions of MIRAMER M1086 observed by BOD meter was 36.5% after 28 days. Therefore the test substance could not be concluded to be readily degradable by microorganisms in the aquatic environment.