Acute Toxicity of Fire Control Chemicals to Daphnia magna (Straus) and Selenastrum capricornutum (Printz)

Table 8

Table 8. Formulation of Field Mixtures for Five Fire-Fighting Chemicals and the Ratio of the Mixture Concentration to the Acute Toxicity Value

Chemical	Field mixture^a		Water type	*Ratio to 48-hr EC₅₀ for Daphnia^b*	Ratio to 96-hr IC₅₀ for algae^b
		(mg/liter)
Fire-Trol GTS-R	1.66 lb/gal	198,930	Soft	774	11,052
			Hard	587
Fire-Trol LCG-R	1 gal/4.5 gal	270,400	Soft	319	27,040
			Hard	333
Phos-Chek D75-F	1.20 lb/gal	143,800	Soft	1027	2996
			Hard	514
Phos-Chek WD-881	1%	10,000	Soft	909	417
			Hard	2500
Silv-Ex	1%	10,000	Soft	1429	667
			Hard	1429
^aWeight or volume of chemical concentrate combined with water to produce application mixture. ^bRatio,field mixture/EC₅₀ or IC₅₀ (mg/liter).