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REACH

Dipotassium oxide

EC number: 235-227-6 | CAS number: 12136-45-7

Life Cycle description
Uses advised against

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Table Summary of Aquatic Toxicity of Potassium oxide/ Dipotassium oxide on Aquatic Organisms

AquaticToxicity	Organism	Species	Test Duration	Result(mg/L)	Test material	Reference
Short-term toxicity to fish	Fish	Labeo rohita	96hr	LC₅₀= 917.6 mg/l	Potassium oxide	Palanisamy,R., and G. Kalaiselvi.,1992
		Pimephales promelas	96hr	LC₅₀=880 mg/l	Potassium chloride	Mount, D.R.,et al, 1997
		Fishes species (freshwater fish)	96hr	LC₅₀= 16062.827 mg/l(calculated)	Potassium oxide	EPA, 2011
Long-term toxicity to fish	Fish	Fishes species (freshwater fish)	30 day	NOEC=1086.545 mg/l (calculated)	Potassium oxide	EPA, 2011
		Heteropneustes fossilis	40 day	NOEC= 2000 mg/l	Potassium oxide	Srivastava,P.N., and A.S. Narain, 1985
		Pimephales promelas	7 day	NOEC=500 mg/l	Potassium chloride	,Q.H., J.M. Lazorchak, and K.L. Winks, 1996
Short-term toxicity to aquatic invertebrates	Invertebrates	Daphnia magna	48hr	ЕC₅₀= 660mg/l	Potassium chloride	Mount, D.R., Gulley, D.D., Hockett, J.R., Garrison, T.D., Evans, J.M., 1997
		Daphnid species	48hr	LC₅₀= 6675.5 mg/l(calculated)	Potassium oxide	EPA, 2011
		Ceriodaphnia dubia	48hr	ЕC₅₀= 630mg/l	Potassium chloride	Mount, D.R., Gulley, D.D., Hockett, J.R., Garrison, T.D., Evans, J.M., 1997
Long-term toxicity to aquatic invertebrates	Invertebrates	Daphnid species	30 day	NOEC= 273.134 mg/l (calculated)	Potassium oxide	EPA, 2011
Long-term toxicity to aquatic invertebrates	Invertebrates	Daphnia magna	21 day	ЕС50=87mg/l	Potassium chloride	Biesinger, K., Christensen, G.L..1972
Toxicity to aquatic algae and cyano-bacteria	Algae	Nitscheria linearis	120hr	EC50=1337mg/l (growth rate)	Potassium chloride	Patrick, , R.,, Jr., J., Scheier, A.,1968
Toxicity to aquatic algae and cyano-bacteria	Algae	Green Algae	30 day	NOEC= 178.832 mg/l (calculated) EC50= 1368.296 mg/l (calculated)	Potassium oxide	EPA, 2011
Toxicity to aquatic plants other than algae	aquatic plants	аquatic plants other than algae	30day	NOEC= 178.832 mg/l (calculated) EC50= 1368.296 mg/l (calculated)	Potassium oxide	EPA, 2011
Toxicity to microorganisms	Microorganisms	Photobacterium phosphoreum	15min	EC50= 22 mg/l	potassium hydroxide	Bulich AA et al, 1990

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