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EC number: 208-933-7
CAS number: 547-67-1
One study is used for the derivation of an acute toxicity reference value (Deleebeeck et al., 2004) at pH ranging from 6 to 7.9. Testing Pseudokircheneriella subcapitata, nickel toxicity increased with increasing pH with 72-h ErC50 values ranging from 125-81.5 µg Ni/L (pH 6-7.9, respectively). Since the value at pH 6 (125 µg/L) is the lowest toxicity value at that pH for any of the standard test species, this value is taken as the toxicity reference value for low pH.
Nickel toxicity to P. subcapitata.
Hardness (mg/L as CaCO3)
95% Confidence Interval
119 - 133
136 - 156
84.8 - 98.5
79.8 - 87.4
69.4 - 95.6
*No reliable confidence limits could be calculated.
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