Registration Dossier

Administrative data

Endpoint:
toxicity to other aquatic vertebrates
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1991
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Insufficient documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Method: microcosm test; according to Guhl (1978)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Perboric acid, sodium salt
EC Number:
234-390-0
EC Name:
Perboric acid, sodium salt
Cas Number:
11138-47-9
Molecular formula:
For detailed information on substance identity, molecular and structural formula see attached file AD_PBS_Substance_Identification (taken from ECB (2007) EU RAR Perboric acid)
IUPAC Name:
sodium hydroxy hydrogen borate
Details on test material:
sodium perborate tetrahydrate; purity: no data

Sampling and analysis

Analytical monitoring:
no

Test organisms

Test organisms (species):
other: other: 6 different trophic levels

Study design

Test type:
flow-through
Water media type:
freshwater
Total exposure duration:
21 d

Test conditions

Details on test conditions:
Test system: flow through (every two hours a volume of 10 ml fresh perborate solution was added)
Light condition: 16 h light / 8 h darkness
Temperature: 20 +- 2°C
water quality: degree of saprobity: 2 (according to Sladecek)

Results and discussion

Effect concentrationsopen allclose all
Duration:
21 d
Dose descriptor:
LOEC
Effect conc.:
2.56 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: relative abundance
Duration:
21 d
Dose descriptor:
NOEC
Effect conc.:
1.42 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: relative abundance
Details on results:
NOEC = 1.42 mg test substance /L (= 0.10 mg B/L)
LOEC = 2.56 mg test substance /L (= 0.18 mg B/L)

Applicant's summary and conclusion