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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Cited in OECD SIDS, Val 1. Valid without restriction

Data source

Reference
Reference Type:
secondary source
Title:
SIDS Initial Assessment Report for SIAM 19 - 3-Hydroxy-2-naphthoic acid
Author:
OECD SIDS
Year:
2004
Report date:
2004

Materials and methods

GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
3-hydroxy-2-naphthoic acid
EC Number:
202-180-8
EC Name:
3-hydroxy-2-naphthoic acid
Cas Number:
92-70-6
Molecular formula:
C11H8O3
IUPAC Name:
3-hydroxy-2-naphthoic acid

Sampling and analysis

Analytical monitoring:
yes

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Study design

Water media type:
freshwater
Total exposure duration:
72 h

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
65.3 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
26.1 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
6.8 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.

Applicant's summary and conclusion