Toxicity of Fire Retardant Chemicals to Aquatic Organisms: Progress Report

Table 8

Table 8. Acute toxicity (48-hour EC50; mg/L; 95% confidence interval in parentheses) of five fire retardant chemicals to neonate Daphni magna exposed in ASTM soft and hard waters. Asterisks denote significant difference (p=0.05) between soft and hard water for a test formulation. Letters in common (a-e for comparisons in soft water; w-z for comparisons in hard water) denote no significant difference (p=0.05) among test formulations

Chemical	Water type	48 hour
Fire-Trol LCG-R	Soft	848^b
		(662-1036)
	Hard	813^x
		(627-992)
Fire-Trol GTS-R	Soft	257^a
		(211-327)
	Hard	339^w
		(270-418)
Phos-Chek D-75-F	Soft	140^c*
		(113-177)
	Hard	280^w*
		(224-386)
Phos-Chek WD-881	Soft	11^d*
		(9-14)
	Hard	4^y*
		(3-5)
Silv-Ex	Soft	7^e
		(6-9)
	Hard	7^z
		(5-8)