Registration Dossier
Registration Dossier
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EC number: 262-975-0 | CAS number: 61788-44-1
Sediment toxicity
Administrative data
Link to relevant study record(s)
- Endpoint:
- sediment toxicity: long-term
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- according to guideline
- Guideline:
- other: as mentioned below
- Principles of method if other than guideline:
- Acute effects of test chemical was studied on Gammarus fasciatus
- GLP compliance:
- not specified
- Vehicle:
- no
- Details on sediment and application:
- Media Ogranic Carbon: 1.8 mg/L
Media Calcium: 39 mg/L
Media Magnesium: 6.9 mg/L
Media Sodium: 10 mg/L
Media Potassium: 6.7 mg/L
Media Sulfate: 31 mg/L - Test organisms (species):
- Gammarus sp
- Details on test organisms:
- WoE 2:
Species Latin Name: Gammarus fasciatus
Species Common Name: Scud
Organism Life Stage: Juvenile
Organism Initial Weight: 0.007 (NR - NR) g
WOE3:
Species Latin Name: Chironomidae
Species Common Name: Midge Family
Organism Life Stage: Immature
Organism Source: Wild - Study type:
- laboratory study
- Test type:
- static
- Water media type:
- not specified
- Type of sediment:
- not specified
- Limit test:
- no
- Duration:
- 96 h
- Exposure phase:
- total exposure duration
- Remarks:
- WoE 2
- Duration:
- 80 d
- Exposure phase:
- total exposure duration
- Remarks:
- WoE3
- Post exposure observation period:
- WoE3: Exposure Duration: 80 Day(s)
Experimental Design: THREE REPLICATES, TEST 2 NON-TARGET SPECIES
Number of Doses: 7
SubHabitat: Palustrine
SubHabitat Description: RICE PLOT
Geographic Code: Louisiana
Geographic Location: LOUISIANA STATE UNIVERSITY RICE EXPERIMENT STATION, CROWLY
Water Depth: 6 - Hardness:
- 130 mg of CaCO3
- Test temperature:
- 20°C
- pH:
- 6.5-8.5
- Conductivity:
- 260 umhos/cm
- Duration:
- 96 h
- Dose descriptor:
- LC50
- Effect conc.:
- 3.2 mg/kg sediment dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Duration:
- 80 d
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.25 other: AI lb/acre
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Conclusions:
- WoE 2: The LC50 of the test chemical reported to be 3.2 mg/L against Gammarus fasciatus after 96 hours of duration
WOE 3:The NOEC of the test chemical reported to be 0.25 AI lb/acre against Chironomidae after 80 days of duration. - Executive summary:
WOE2: The acute studies of Gammarus fasciatus was studied for the period of 96 hours. the test organism was exposed to 5 test concentrations for the period of 96 hours. The LC50 of the test chemical reported to be 3.2 mg/L against Gammarus fasciatus after 96 hours of duration.
WOE 3:The NOEC of the test chemical reported to be 0.25 AI lb/acre against Chironomidae after 80 days of duration.
Reference
Description of key information
The sediment toxicity of test chemical is summarised below
WOE2: The acute studies of Gammarus fasciatus was studied for the period of 96 hours. the test organism was exposed to 5 test concentrations for the period of 96 hours. The LC50 of the test chemical reported to be 3.2 mg/L against Gammarus fasciatus after 96 hours of duration.
WOE 3:The NOEC of the test chemical reported to be 0.25 AI lb/acre against Chironomidae after 80 days of duration.
Key value for chemical safety assessment
- EC50 or LC50 for freshwater sediment:
- 3.2 mg/kg sediment dw
Additional information
The sediment toxicity of test chemical is summarised below
WOE2: The acute studies of Gammarus fasciatus was studied for the period of 96 hours. the test organism was exposed to 5 test concentrations for the period of 96 hours. The LC50 of the test chemical reported to be 3.2 mg/L against Gammarus fasciatus after 96 hours of duration.
WOE 3:The NOEC of the test chemical reported to be 0.25 AI lb/acre against Chironomidae after 80 days of duration.
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