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EC number: 273-728-1
CAS number: 69012-28-8
By-product of the manufacture of ferromanganese alloy containing primarily oxides of aluminum, manganese and silicon.
A standard acute toxicity study with
Daphnia was conducted and resulted in a 48 hour EL50 of 41 mg/L loading
rate WAF, and a NOEC of 32 mg/L loading rate WAF. A standard acute
toxicity study with fish was conducted with FeMn slag as a limit test at
100 mg/L loading rate WAF and showed no effects. Therefore the 96 Hour
LL50 was greater than 100 mg/L loading rate WAF and the NOEC was 100
mg/L loading rate WAF. A standard study on algae resulted in 72hr ErL50
90 mg/L loading rate WAF, EyL50 = 39 mg/L loading rate WAF, NOEC = 10
mg/L loading rate WAF, whilst an 8 day chronic study on daphnia gave
NOEC = 3.2 mg/L loading rate WAF.
No effects on sewage sludge were
observed in a standard 3 hour study on FeMn Slag. Hence the NOEC for
FeMn slag is 1000 mg/L.
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