Registration Dossier

Diss Factsheets

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Administrative data

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)
Rationale for reliability incl. deficiencies:
other: Data is from computational model developed by USEPA

Data source

Reference
Reference Type:
other: Prediction model
Title:
Bio-degradation in water and sediment by EPI (Estimation Programs Interface) Suite
Author:
Sustainability Support Service (Europe) AB - estimated
Year:
2015
Bibliographic source:
Estimation Programs Interface Suite™ United States Environmental Protection Agency, Washington, DC, USA. version 4.1

Materials and methods

Test guideline
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

Test material

Constituent 1
Chemical structure
Reference substance name:
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
EC Number:
219-746-5
EC Name:
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
Cas Number:
2519-30-4
Molecular formula:
C28H21N5O14S4.4Na
IUPAC Name:
tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
Constituent 2
Reference substance name:
C.I. FOOD BLACK 1
IUPAC Name:
C.I. FOOD BLACK 1
Details on test material:
- Name of test material (as cited in study report): C.I. FOOD BLACK 1- Molecular formula (if other than submission substance): C28-H21-N5-O14-S4.4Na- Molecular weight (if other than submission substance): 867.6873- Smiles notation (if other than submission substance): c12c(c(ccc1NC(C)=O)S(=O)(=O)[O-])cc(S(=O)(=O)[O-])c(c2O)\N=N\c1c2c(c(\N=N\c3ccc(S(=O)(=O)[O-])cc3)cc1)ccc(c2)S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]- InChl (if other than submission substance): GMMAPXRGRVJYJY-TWEFBAQVSA-J- Substance type: Organic- Physical state: Solid

Study design

Oxygen conditions:
other: estimation
Inoculum or test system:
not specified
Details on source and properties of surface water:
No data available
Details on source and properties of sediment:
No data available
Details on inoculum:
No data available
Parameter followed for biodegradation estimation:
test mat. analysis

Results and discussion

Mean total recoveryopen allclose all
Compartment:
other: water, material (mass) balance
% Recovery:
0.555
Compartment:
other: sediment, material (mass) balance
% Recovery:
47.3
% Degradationopen allclose all
% Degr.:
50
Parameter:
other: Half life in water
Sampling time:
180 d
% Degr.:
50
Parameter:
other: Half-life in sediment
Sampling time:
1 620.833 d
Half-life of parent compound / 50% disappearance time (DT50)open allclose all
Compartment:
water
DT50:
180 d
Type:
other: estimation
Temp.:
25 °C
Compartment:
sediment
DT50:
1 620.833 d
Type:
other: estimation
Temp.:
25 °C
Transformation products:
not specified

Any other information on results incl. tables

 

Mass Amount

(percent)

 Half-Life

 (hr)

Emissions

(kg/hr)

Water

0.555

4.32e+003

1000

Sediment

47.3

3.89e+004

0

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

 (kg/hr)

Reaction

 (percent)

Advection

 (percent)

Water

1.31e-046

40.4

252

1.35

8.39

Sediment

3.55e-046

382

428

12.7

14.3

Applicant's summary and conclusion

Conclusions:
Half life period of C.I. FOOD BLACK 1 in water is observed to be 180 days (4320 hrs.) while in sediment it is 1620.833 days (38900 hrs). Based on these half life values of C.I. FOOD BLACK 1, it is concluded that the chemical is very persistent in water and sediment.
Executive summary:

Half life period of C.I. FOOD BLACK 1 in water is observed to be 180 days (4320 hrs.) while in sediment it is 1620.833 days (38900 hrs). Based on these half life values of C.I. FOOD BLACK 1, it is concluded that the chemical is very persistent in water and sediment.