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EC number: 237-410-6
CAS number: 13775-53-6
As cryolite dissociates in
water and the risks are assumed to be determined by fluoride, it is more
appropriate to assess the adsorption behaviour of fluoride. In a column
leaching test, Koc values varying from 603 - 6502 were found for
fluoride in 4 different soils, tested at cryolite concentrations varying
from 5 - 50 ppm (Dykeman, 1985). The geometric mean of 1,498 (log Koc
3.18) will be used in the assessment.
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