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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Reference
Endpoint:
biodegradation in water and sediment: simulation tests
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Qualifier:
according to guideline
Guideline:
other: Modeling database
Principles of method if other than guideline:
Fugacity Model by EPI Suite estimation database
GLP compliance:
no
Radiolabelling:
not specified
Oxygen conditions:
other: estimation
Inoculum or test system:
not specified
Parameter followed for biodegradation estimation:
test mat. analysis
Compartment:
other: water, material (mass) balance
% Recovery:
5.62
Compartment:
other: sediment, material (mass) balance
% Recovery:
22.7
% Degr.:
50
Parameter:
other: Half life in water
Sampling time:
60 d
Remarks on result:
other: Other details not known.
% Degr.:
50
Parameter:
other: Half-life in sediment
Sampling time:
541.667 d
Remarks on result:
other: Other details not known.
Compartment:
water
DT50:
60 d
Type:
other: estimation
Temp.:
25 °C
Remarks on result:
other: Other details not known.
Compartment:
sediment
DT50:
541.667 d
Type:
other: estimation
Temp.:
25 °C
Remarks on result:
other: Other details not known.
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

 

Mass Amount

(percent)

Half-Life

(hr)

Emissions

(kg/hr)

Water

5.62

1.44e+003

1000

Sediment

22.7

1.3e+004

0

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

(kg/hr)

Reaction

(percent)

Advection

(percent)

Water

1.14e-023

298

619

9.93

20.6

Sediment

1.91e-023

134

50

4.45

1.67

 

Validity criteria fulfilled:
not specified
Conclusions:
Estimated half life of 1,8-Bis((4-methylphenyl)amino)anthraquinone in water is 60 days (1440 h) and in sediment estimated to be 541.66 days (13000 h).
Executive summary:

Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound 1,8-Bis((4-methylphenyl)amino)anthraquinone (CAS no. 82 -16 -6). Half-life of 1,8-Bis((4-methylphenyl)amino)anthraquinone in water is estimated to be 60 days (1440 hrs) while in sediment it is 541.66 days (13000 hrs). Based on these half-life value of 1,8 -Bis((4 -methylphenyl)amino)anthraquinone, it is concluded that the chemical is persistent in both water and sediment.

Description of key information

Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound 1,8-Bis((4-methylphenyl)amino)anthraquinone (CAS no. 82 -16 -6). Half-life of 1,8-Bis((4-methylphenyl)amino)anthraquinone in water is estimated to be 60 days (1440 hrs) while in sediment it is 541.66 days (13000 hrs). Based on these half-life value of 1,8 -Bis((4 -methylphenyl)amino)anthraquinone, it is concluded that the chemical is persistent in both water and sediment.

Key value for chemical safety assessment

Half-life in freshwater:
60 d
at the temperature of:
25 °C
Half-life in freshwater sediment:
541.66 d
at the temperature of:
25 °C

Additional information

Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound 1,8-Bis((4-methylphenyl)amino)anthraquinone (CAS no. 82 -16 -6). Half-life of 1,8-Bis((4-methylphenyl)amino)anthraquinone in water is estimated to be 60 days (1440 hrs) while in sediment it is 541.66 days (13000 hrs). Based on these half-life value of 1,8 -Bis((4 -methylphenyl)amino)anthraquinone, it is concluded that the chemical is persistent in both water and sediment.