Phenol, styrenated

Sediment toxicity

Link to relevant study record(s)

Reference

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.

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.