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Short term effects on fish ranged from 74 to 725 mg B/L. Equivalent concentrations of sodium pentaborate would be:


Anhydrous: 281 to 2750 mg/L,


Pentahydrate: 404 to 3957 mg/L.


Short term effects on aquatic invertebrates ranged from 45 to 1376 mg B/L. Equivalent concentrations of sodium pentaborate would be:


Anhydrous: 171 to 5220 mg/L,


Pentahydrate: 246 to 7511 mg/L.


Short term effects on the algae Pseudokirchneriella subcapitata (formerly Selenastrum capricorntum) were observed at 40 mg B/L. Equivalent concentrations of sodium pentaborate would be:


Anhydrous: 152 mg/L,


Pentahydrate: 218 mg/L.


These data support a conclusion that borates should not be classified as dangerous for the environment.

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