1,1-dichloroethylene

Endpoint summary

Additional information

Seven publications record experimental result on ecotoxicological properties of 1,1-dichloroethylene in aquatic organisms. An overview of the ecotoxicological dataset is provided in the table below.

Section	Guideline	Species	Basis for effect	Endpoint	Effect concentration (mg/L)	Reference	Reliability
Short-term toxicity to fish	EPA-660/3-75-009	Lepomis macrochirus	Mortality	96h-LC50	= 74 (nom.)	Buccafusco et al., 1981	3
Short-term toxicity to fish		Lepomis macrochirus	Mortality	96h-LC50	= 220 (nom.)	Dawson, 1977	3
Short-term toxicity to fish		Menydia beryllina	Mortality	96h-LC50	=250 (nom.)	Dawson, 1977	3
Short-term toxicity to fish	EPA-660/3-75-009	Cyprinodon variegatus	Mortality	96h-LC50 96h-NOEC	= 250 (nom.) = 80 (nom.)	Heitmuller et al., 1980	3
Short-term toxicity to aquatic invertebrates	EPA-660/375-009	Daphnia magna	Mortality	48h-LC50	= 79 (nom.)	LeBlanc, 1980	3
Toxicity to aquatic algae		Chlamydomonas reinhardtii	Cell number	72h-EC50 72h-EC10	=9.12 (mea.) = 3.94 (mea.)	Brack and Rottler, 1994	2
Toxicity to aquatic algae	OECD 209	Scenedesmus abundans	Growth rate	96h-EC50 96h-EC10	= 410 (nom.) = 240 (nom.)	Geyer et al., 1985	3

The lowest LC50 recorded in short-term toxicity testing was obtained with aquatic algae (72-h EC50= 9.12 mg/L) indicating that aquatic algae should be considered the most (acutely) sensitive trophic level.