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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 from EPISUITE

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:
2017
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 III by EPI Suite estimation database
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Trisodium 3-hydroxy-4-(4'-sulphonatonaphthylazo)naphthalene-2,7-disulphonate
EC Number:
213-022-2
EC Name:
Trisodium 3-hydroxy-4-(4'-sulphonatonaphthylazo)naphthalene-2,7-disulphonate
Cas Number:
915-67-3
Molecular formula:
C20H14N2O10S3.3Na
IUPAC Name:
trisodium 3-hydroxy-4-(4'-sulphonatonaphthylazo)naphthalene-2,7-disulphonate
Constituent 2
Reference substance name:
2,7-Naphthalenedisulfonic acid, 3- hydroxy-4-[2-(4-sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1 : 3)
IUPAC Name:
2,7-Naphthalenedisulfonic acid, 3- hydroxy-4-[2-(4-sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1 : 3)
Constituent 3
Reference substance name:
Amaranth
IUPAC Name:
Amaranth
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Name of test material (as cited in study report): Amaranth dye
Molecular formula (if other than submission substance): C20H11N2Na3O10S3
Molecular weight (if other than submission substance): 604.47
Smiles notation (if other than submission substance): c1ccc2c(c1)c(ccc2S(=O)(=O)[O-])N=Nc3c4ccc(cc4cc(c3O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]
InChl (if other than submission substance): 1S/C20H14N2O10S3.3Na/c23-20-18(35(30,31)32)10-11-9-12(33(24,25)26)5-6-13(11)19(20)22-21-16-7-8-17(34(27,28)29)15-4-2-1-3-14(15)16;;;/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32);;;/q;3*+1/p-3
Substance type: Organic
Physical state: Solid
Radiolabelling:
not specified

Study design

Oxygen conditions:
other: estimation
Inoculum or test system:
not specified

Results and discussion

% Degradation
% Degr.:
50
Parameter:
other: Half life
Sampling time:
60 d
Half-life of parent compound / 50% disappearance time (DT50)open allclose all
Compartment:
water
DT50:
60 d
Type:
not specified
Temp.:
25 °C
Compartment:
sediment
DT50:
541.667 d
Type:
not specified
Temp.:
25 °C
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

Any other information on results incl. tables

Level III Fugacity Model

 

 

Mass Amount

(Percent)

Half life (in hours)

Emissions

(kg/hr)

Water

1.38

1.44x103

1000

Sediment

55

1.3x104

1000

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

(kg/hr)

Reaction (percent)

Advection

(percent)

Water

1.37 x 10-36

120

250

4.01

8.33

Sediment

2.28 x 10-36

532

199

17.7

6.63

Applicant's summary and conclusion

Validity criteria
Validity criteria fulfilled:
not specified
Conclusions:
Half life period of Amaranth in sediment is 13000 hrs (541.667 days) and as per BIOWIN model Amaranth is not readily biodegradable in water. So on the basis of these values it is concluded that Amaranth is not readily biodegradable in water as well as in sediment. Since the degradation half life of the compound exceeds the threshold of 120 days as per the Annex XIII of the REACH regulation. Hence it can be concluded that the test chemical is persistent in fresh water sediments.

Half life period of Amaranth in water is 1440 hours (60 days) and as per BIOWIN model Amaranth is not readily biodegradable in water. Since the degradation half life of the compound exceeds the threshold of 60 days as per the Annex XIII of the REACH regulation. Hence it can be concluded that the est chemical is persistent in fresh and marine water.
Executive summary:

Half life period of Amaranth in sediment is 13000 hrs (541.667 days) and as per BIOWIN model Amaranth is not readily biodegradable in water. So on the basis of these values it is concluded that Amaranth is not readily biodegradable in water as well as in sediment. Since the degradation half life of the compound exceeds the threshold of 120 daysas per the Annex XIII of the REACH regulation. Hence it can be concluded that the test chemical is persistent in fresh water sediments.

 

Half life period of Amaranth in water is 1440 hours (60 days)and as per BIOWIN model Amaranth is not readily biodegradable in water.Since the degradation half life of the compound exceeds the threshold of 60 daysas per the Annex XIII of the REACH regulation. Hence it can be concluded that the test chemical is persistent in fresh and marine water.

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