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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
other: predicted data
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
other: Prediction model
Title:
Biodegradation in water : screening tests by Environmental Science Center’s PBT profiler
Author:
Environmental Science Center
Year:
2013
Bibliographic source:
PBT profiler, Office of Chemical Safety and Pollution Prevention , U.S. Environmental Protection Agency; version 1.301

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: modelling database
Principles of method if other than guideline:
Data is from PBT Profiler Database.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
5-aminonaphthalene-2-sulphonic acid
EC Number:
204-351-2
EC Name:
5-aminonaphthalene-2-sulphonic acid
Cas Number:
119-79-9
Molecular formula:
C10H9NO3S
IUPAC Name:
5-aminonaphthalene-2-sulfonic acid
Details on test material:
Name of the test material: 5-aminonaphthalene-2-sulphonic acid
Molecular formula: C10H9NO3S
Molecular weight: 223.26
Physical state: Solid
Substance Type: Organic

Study design

Oxygen conditions:
other: estimation
Inoculum or test system:
not specified
Duration of test (contact time):
38 d

Results and discussion

% Degradation
Parameter:
other: half life
Value:
50
Sampling time:
38 d
Remarks on result:
other: 38 d = 912 hrs
Details on results:
Half life = 38 days

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable
Conclusions:
5-aminonaphthalene-2-sulphonic acid is 50% biodegradable in water in 38 days (half-life) indicating that 5-aminonaphthalene-2-sulphonic acid is readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent).
Executive summary:

5-aminonaphthalene-2-sulphonic acid is 50% biodegradable in water in 38 days (half-life) indicating that 5-aminonaphthalene-2-sulphonic acid is readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent).