Table 2.

Percent of compounds that fall in each acute aquatic toxicity category of concern (Table 1) as different property filters are applied

Property-based filter	Acute aquatic toxicity concern category				Mean LC50 of compounds retained
	High (%)	Moderate (%)	Low (%)	None (%)	mg/L	mmol/L
None	15	55	15	15	999	0.155
logDo/w < 1.7	12	27	80	100	2,247	1.29
logDo/w < 1.7; ΔE > 6 eV	7	15	48	89	3,006	2.71
logDo/w < 1.7; ΔE > 6 eV; V < 620 Å3	1	11	45	88	3,405	3.65

The mean LC₅₀ values (both mass and molar based) of the compounds retained by each property filter are also reported.