7-amino-4-hydroxynaphthalene-2-sulphonic acid

Bioaccumulation: aquatic / sediment

Link to relevant study record(s)

Reference

Endpoint:

bioaccumulation in aquatic species: fish

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Justification for type of information:

Data is from J-CHECK and EnviChem authoritative databases

Qualifier:

according to guideline

Guideline:

other: "Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances"

Principles of method if other than guideline:

Bioaccumulation study was conducted on test organism Cyprinus carpio for 6 weeks for evaluating the bioconcentration factor (BCF value) of test chemical. The study was performed according to other guideline "Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances", respectively.

GLP compliance:

not specified

Radiolabelling:

not specified

Vehicle:

not specified

Test organisms (species):

Cyprinus carpio

Details on test organisms:

TEST ORGANISM
- Common name: Carp
- Length at study initiation (lenght definition, mean, range and SD): 8
- Sex: MF

Route of exposure:

aqueous

Test type:

flow-through

Water / sediment media type:

natural water: freshwater

Total exposure / uptake duration:

6 wk

Test temperature:

25°C

pH:

6.0-8.5

Details on test conditions:

RANGE-FINDING / PRELIMINARY STUDY
- Test concentrations : TLm(48h) 480 ppm (w/v), Rice fish (Oryzias latipes

Nominal and measured concentrations:

Nominal concentrations:
1st concentration area: 2 mg/l (2 ppm(w/v))
2nd concentration area: 0.2 mg/l (0.2 ppm (w/v))

Reference substance (positive control):

not specified

Key result

Conc. / dose:

2 mg/L

Type:

BCF

Value:

<= 0.2 L/kg

Basis:

whole body w.w.

Time of plateau:

6 wk

Remarks on result:

other: Other details not known

Key result

Conc. / dose:

0.2 mg/L

Type:

BCF

Value:

<= 2.4 L/kg

Basis:

whole body w.w.

Time of plateau:

6 wk

Remarks on result:

other: Other details not known

Bioaccumulation test results

		2 W	3 W	4 W	6 W
1st Concentration area	Test substance concentration (ppm(w/v))	1.81	1.80	1.84	1.90
	Bioconcentration factor (L/kg)	<= 0.2	<= 0.2	<= 0.2	<= 0.2
		<= 0.2	<= 0.2	<= 0.2	<= 0.2
2nd Concentration area	Test substance concentration (ppm(w/v))	0.190	0.195	0.192	0194
	Bioconcentration factor (L/kg)	<= 2.4	<= 2.4	<= 2.4	<= 2.4
		<= 2.4	<= 2.4	<= 2.4	<= 2.4

Validity criteria fulfilled:

not specified

Conclusions:

The bioconcentration factor (BCF value) of test chemical on Cyprinus carpio was determined to be in the range of ≤ 0.2 L/Kg at a conc. of 2 mg/l and ≤ 2.4 L/Kg at a conc. of 0.2 mg/l, respectively.

Executive summary:

Bioaccumulation study was conducted on test organism Cyprinus carpiofor 6 weeks for evaluating the bioconcentration factor (BCF value) of test chemical.The study was performed according to other guideline"Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances" under flow through conditions at a temperature of25°C and pH range 6.0-8.5, respectively. Cyprinus carpio (length - 8 dimensionless) was used as a test organism for the study. Test chemical nominal conc. used for the study was 2 mg/l and 0.2 mg/l, respectively. Range finding study involve the TLm(48h) 480 ppm (w/v) on Rice fish (Oryzias latipes).The bioconcentration factor (BCF value) of test chemical on Cyprinus carpio was determined to be in the range of ≤ 0.2 L/Kg at a conc. of 2 mg/l and ≤ 2.4 L/Kg at a conc. of 0.2 mg/l, respectively, which does not exceed the bioconcentration threshold of 2000, indicating that the test chemical is not expected to bioaccumulate in the food chain.

Description of key information

Bioaccumulation study was conducted on test organism Cyprinus carpiofor 6 weeks for evaluating the bioconcentration factor (BCF value) of test chemical (authoritative databases, 2018).The study was performed according to other guideline"Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances" under flow through conditions at a temperature of25°C and pH range 6.0-8.5, respectively. Cyprinus carpio (length - 8 dimensionless) was used as a test organism for the study. Test chemical nominal conc. used for the study was 2 mg/l and 0.2 mg/l, respectively. Range finding study involve the TLm(48h) 480 ppm (w/v) on Rice fish (Oryzias latipes).The bioconcentration factor (BCF value) of test chemical on Cyprinus carpio was determined to be in the range of ≤ 0.2 L/Kg at a conc. of 2 mg/l and ≤ 2.4 L/Kg at a conc. of 0.2 mg/l, respectively, which does not exceed the bioconcentration threshold of 2000, indicating that the test chemical is not expected to bioaccumulate in the food chain.

Key value for chemical safety assessment

BCF (aquatic species):

2.4 L/kg ww

Additional information

Experimental study and various predicted data of the test chemical were reviewed for the bioaccumulation end point which are summarized as below:

 

In an experimental key study from authoritative databases (2018), bioaccumulation experiment was conducted on test organism Cyprinus carpio for 6 weeks for evaluating the bioconcentration factor (BCF value) of test chemical. The study was performed according to other guideline "Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances" under flow through conditions at a temperature of25°C and pH range 6.0-8.5, respectively. Cyprinus carpio (length - 8 dimensionless) was used as a test organism for the study. Test chemical nominal conc. used for the study was 2 mg/l and 0.2 mg/l, respectively. Range finding study involve the TLm (48h) 480 ppm (w/v) on Rice fish (Oryzias latipes).The bioconcentration factor (BCF value) of test chemical on Cyprinus carpio was determined to be in the range of ≤ 0.2 L/Kg at a conc. of 2 mg/l and ≤ 2.4 L/Kg at a conc. of 0.2 mg/l, respectively.

 

In a prediction done using the BCFBAF Program of Estimation Programs Interface was used to predict the bioconcentration factor (BCF) of test chemical. The bioconcentration factor (BCF) of test chemical was estimated to be 3.162 L/kg whole body w.w (at 25 deg C).

 

In an another prediction done by using Bio-concentration Factor module (ACD (Advanced Chemistry Development)/I-Lab predictive module, 2017)), Bio-concentration Factor of the test chemical was estimated to be 1 dimensionless at pH range 1-14, respectively.

 

On the basis of above results for test chemical, it can be concluded that the BCF value of test chemical ranges from 0.2 to 3.162, respectively, which does not exceed the bioconcentration threshold of 2000, indicating that the test chemical is not expected to bioaccumulate in the food chain.