Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate

Biodegradation in soil

Administrative data

Endpoint:

biodegradation in soil

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:

Biodegradation in soil 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:

Data is estimated data

GLP compliance:

no

Test type:

other: Estimated

Test material

Test material information

Constituent 1

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 4-acetamido-5-hydroxy-6-({7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]-1-naphthyl}diazenyl)naphthalene-1,7-disulfonate

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

Results and discussion

% Degradation

Soil No.:

#1

% Degr.:

50

Parameter:

other: Half life

Sampling time:

360 d

Half-life / dissipation time of parent compound

Soil No.:

#1

DT50:

360 d

Type:

other: estimated data

Remarks on result:

other: other details not available

Transformation products:

not specified

Any other information on results incl. tables

 

	Mass Amount (percent)	Half-Life  (hr)	Emissions (kg/hr)
Soil	52.2	8.64e+003	1000

 

	Fugacity (atm)	Reaction (kg/hr)	Advection  (kg/hr)	Reaction  (percent)	Advection  (percent)
Soil	8.71e-048	1.9e+003	0	63.3	0

 

Applicant's summary and conclusion

Conclusions:

EPI Suite has estimated that C.I. FOOD BLACK 1 is expected to be found predominantly in soil and its very persistence estimate is based on its transformation in this medium. Its half-life in soil, 360 days (8640 hrs), exceeds the threshold of 120 days as per Annex XIII of REACH.Therefore, C.I. FOOD BLACK 1 is estimated to be very persistent in the soil environment.

Executive summary:

EPI Suite has estimated that C.I. FOOD BLACK 1 is expected to be found predominantly in soil and its very persistence estimate is based on its transformation in this medium. Its half-life in soil, 360 days (8640 hrs), exceeds the threshold of 120 days as per Annex XIII of REACH.

Therefore, C.I. FOOD BLACK 1 is estimated to be very persistent in the soil environment.