Butyl 2,3-epoxypropyl ether

Endpoint summary

Description of key information

Table: overview of key aquatic toxicity data:

Study	Guideline / GLP	Species	Endpoint	Effect value
Fish short-term toxicity	sim. or eq. to OECD 203 / GLP status unknown	Oncorhynchus mykiss.	96-h LC50	65 mg/L
Daphnia short-term toxicity	sim. or eq. to OECD 202 / GLP status unknown	Daphnia magna	48-h EC50	9.2 mg/L
Alga toxicity	OECD 201 / GLP status unknown	Selenastrum capricornutum	48 to 96-h ErC50 ErC10	35 mg/L not determined
Microorganisms toxicity	No release to wastewater	-	-	-

Additional information

Stability of BGE during aquatic toxicity tests

BGE is a substance with a vapour pressure of 427 Pa at 20 ºC, it can therefore be classified as a substance with low fugacity. Based on its physical and chemical properties, the results of Level III fugacity modelling (Table 1) suggest that n-butyl glycidyl ether will tend to remain in the compartment to which it is released. It can therefore be concluded that during the testing the volatilization of BGE to the air compartment can be expected to be low.

 

Table 1. Results of the Level III fugacity modelling (EQC, 2003) ofn-butyl glycidyl ether

Substance released to:	Fraction of substance partitioning to each medium (%)
	Air	Water	Soil	Sediment
Air (100%)	64	17	19	0.0
Water (100%)	0.0	99.8	0.0	0.2
Soil (100%)	0.0	20.0	80.0	0.0

 

BGE has an experimental Henry’s law constant of 2.5 Pa.m3/mol (Lewis, 2001). Therefore, no significant evaporation from the water phase is expected. In conclusion, it is expected that the concentration of BGE remained constant between each renewal period.