Ecotoxicity
Components:
hydroquinone monomethyl ether:
Toxicity to fish
LC50 (Oncorhynchus mykiss (rainbow trout)): 28.5 mg/l Exposure time: 96 h Test Type: flow-through test Analytical monitoring: yes Method: OECD Test Guideline 203
Toxicity to daphnia and other aquatic invertebrates
EC50 (Daphnia magna (Water flea)): 3 mg/l End point: Immobilization Exposure time: 48 h Test Type: static test Analytical monitoring: yes Method: OECD Test Guideline 202 GLP: yes NOEC (Daphnia magna (Water flea)): 0.68 mg/l Exposure time: 21 d Test Type: semi-static test Analytical monitoring: yes GLP: yes
Toxicity to algae/aquatic plants
EC50 (Pseudokirchneriella subcapitata (green algae)): 54.7 mg/l Exposure time: 72 h Test Type: static test Analytical monitoring: yes Method: OECD Test Guideline 201 GLP: yes
Ecotoxicology Assessment
Chronic aquatic toxicity
Harmful to aquatic life with long lasting effects.
hydroquinone:
Toxicity to fish
LC50 (Oncorhynchus mykiss (rainbow trout)): 0.638 mg/l End point: mortality Exposure time: 96 h Test Type: flow-through test Analytical monitoring: yes Method: OECD Test Guideline 203
Toxicity to daphnia and other aquatic invertebrates
EC50 (Daphnia magna (Water flea)): 0.134 mg/l End point: Immobilization Exposure time: 48 h Test Type: semi-static test Analytical monitoring: yes Method: OECD Test Guideline 202 GLP: yes
Toxicity to algae/aquatic plants
ErC50 (Pseudokirchneriella subcapitata): 0.33 mg/l Exposure time: 72 h Test Type: static test Analytical monitoring: yes Method: OECD Test Guideline 201 GLP: yes NOEC (Pseudokirchneriella subcapitata): 0.019 mg/l Exposure time: 72 h Test Type: static test Analytical monitoring: yes Method: OECD Test Guideline 201 GLP: yes
Toxicity to fish (Chronic toxicity)
NOEC (Pimephales promelas (fathead minnow)): >= 0.1 mg/l End point: reproduction rate Exposure time: 32 d Test Type: flow-through test Analytical monitoring: yes Method: OECD Test Guideline 210 GLP: yes
Toxicity to daphnia and other aquatic invertebrates (Chronic toxicity)
LC50 (Daphnia magna (Water flea)): 0.061 mg/l End point: mortality Exposure time: 21 d Test Type: semi-static test Analytical monitoring: yes Method: OECD Test Guideline 211 GLP: yes
Ecotoxicology Assessment
Acute aquatic toxicity
Very toxic to aquatic life.
Chronic aquatic toxicity
Very toxic to aquatic life with long lasting effects.
Persistence and degradability
Components:
hydroquinone monomethyl ether:
Biodegradability
aerobic Inoculum: activated sludge Result: Readily biodegradable. Biodegradation: 86 % Exposure time: 28 d Method: OECD Test Guideline 301C
hydroquinone:
Biodegradability
aerobic Inoculum: activated sludge Concentration: 100 mg/l Result: Readily biodegradable. Biodegradation: 70 % Exposure time: 14 d Method: OECD Test Guideline 301C
Bioaccumulative potential
Components:
hydroquinone monomethyl ether:
Bioaccumulation
Remarks: Bioaccumulation is unlikely.
hydroquinone:
Partition coefficient: noctanol/water
log Pow: 0.59 (20 - 25 °C) Remarks: Bioaccumulation is not expected.
Mobility in soil
Components:
hydroquinone monomethyl ether:
Distribution among environmental compartments
Adsorption/Soil Koc: 55.7 Remarks: (Lit.)
Other adverse effects
No data available