3-hydroxy-2-naphthoic acid

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

Test material information

Constituent 1

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 concentrations

Effect concentrations 1

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

Effect concentrations 2

Duration:

72 h

Dose descriptor:

EC50

Effect conc.:

26.1 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

biomass

Effect concentrations 3

Duration:

72 h

Dose descriptor:

NOEC

Effect conc.:

6.8 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.