Northern Prairie Wildlife Research Center

Toxicity of Fire Retardant Chemicals to Aquatic Organisms: Progress Report

Table 7

Table 7. Summary of ammonia characteristics of five fire chemicals in tests with fathead minnows at the swim-up life stage.

Chemical
Water type
LC50 mg/l
Total ammonia NH3-N mg/L
pH range
Unionized ammonia mg/L
F-T GTS-R
Soft
233
41
7.39-7.66
0.69-1.27
Hard
135
26
7.39-7.66
0.43-0.80
F-T LCG-R
Soft
1080
105
6.95-7.15
0.64-1.02
Hard
519
53
6.94-7.29
0.33-0.74
P-C D-75-F
Soft
420
71
6.48-7.33
0.15-1.04
Hard
168
29
6.72-7.72
0.10-1.02
P-C WD-881
Soft
14
0.04
-
-
Hard
14
0.03
-
-
Silv-Ex
Soft
22
0.23
-
-
Hard
20
0.18
-
-
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