Trifluoroacetic acid

Toxicity to aquatic plants other than algae

Administrative data

Endpoint:

toxicity to aquatic plants other than algae

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1999

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: A reliable and scientifically sound publication referring to a read-across substance.

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

1999

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: ASTM Standards, E 1415- 91, Vol 11.05.

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Sodium trifluoroacetate

EC Number:

220-879-6

EC Name:

Sodium trifluoroacetate

Cas Number:

2923-18-4

Molecular formula:

C2HF3O2.Na

IUPAC Name:

sodium trifluoroacetate

Specific details on test material used for the study:

Mixture of sodium trifluoroacetate and [14C]trifluoroacetic acid
- Analytical purity: pure substance

Sampling and analysis

Analytical monitoring:

yes

Test solutions

Vehicle:

no

Test organisms

Test organisms (species):

Lemna gibba

Details on test organisms:

TEST ORGANISM
- Common name: duckweed
- Source (laboratory, culture collection): cultures orginating from University of Waterloo, Canada

Study design

Test type:

static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

168 h

Test conditions

Test temperature:

23-25°C

Nominal and measured concentrations:

0, 19, 38, 75, 150, 300, 600, 1.200, and 2.400 mg/L (nominal)

Results and discussion

Effect concentrations

Effect concentrations 1

Duration:

168 h

Dose descriptor:

EC50

Effect conc.:

1 100 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

biomass

Effect concentrations 2

Duration:

168 h

Dose descriptor:

NOEC

Effect conc.:

300 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

biomass