Trisodium 3-hydroxy-4-(4'-sulphonatonaphthylazo)naphthalene-2,7-disulphonate

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

Test material information

Constituent 1

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-sulfonato-1-naphthyl)diazenyl]naphthalene-2,7-disulfonate

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)

Half-life of parent compound / 50% disappearance time (DT50) 1

Compartment:

water

DT50:

60 d

Type:

not specified

Temp.:

25 °C

Half-life of parent compound / 50% disappearance time (DT50) 2

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	1.44x10^3	1000
Sediment	55	1.3x10^4	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.