Registration Dossier

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
other: Hydrolysis product
Adequacy of study:
key study
Study period:
1988
Reliability:
2 (reliable with restrictions)
Justification for type of information:
Substance 530-62-1 hydrolyses

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report Date:
1988

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Directive 79/831EEC, AnnexV,Part C
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
99,8%

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
not specified

Results and discussion

Effect concentrations
Key result
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
341.5 mg/L
Nominal / measured:
not specified

Any other information on results incl. tables

- Number of mobile test animals after exposure (48 h) to
various test concentrations:

concentration (mg/L) mobile daphnids

31.25                 20

62.5                  20

125.0                  20

250.0                  20

500.0                   0

control                 20

- Effect values after 48 h:

EC50 = 341.51 mg/L

95 % confidence limits: 319.08-365.51 mg/L

- Effect values after 24 h:

EC0 =500 mg/L
EC50 >500 mg/L

95 % confidence limits: no data

EC100 = >500 mg/L

- pH at start: concentration (mg/L) pH

31.25           8.32

62.5            8.44

125.0           8.59

250.0           8.75

500.0           8.75

control          8.28

- pH after 48 h: concentration (mg/L)pH

31.25           8.14

62.5            8.12

125.0           8.15

250.0           8.23

500.0           8.36

control          8.19

- Oxygen (O2, mg/L) at start:

concentration (mg/L) oxygen

31.25           9.02

62.5            9.02

125.0           9.03

250.0           8.98

500.0           8.90

control          8.99

- Oxygen (O2, mg/L) after 48 h:

concentration (mg/L) oxygen

31.25            8.2

62.5            8.13

125.0           8.15

250.0           8.16

500.0           8.13

control          8.16

Applicant's summary and conclusion