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EC number: 215-477-2 | CAS number: 1327-41-9
Studies performed on earthworms using a hydrated salt of aluminium sulphate (and aluminium chloride hexahydrate) in addition to the standard soil containing kaolinite (Al2Si205(OH)) resulted in ecotoxicity at concentrations considerably lower than those found in top- and sub-soils (14 d LC50s around 300 mgAl/Kg dw at pH 3-4 and >1000 mgAl/Kg dw at pH4-6 and 6 week NOECs of 100 mg Al/Kg dw at pH 3.4 -7.3 for reproduction). The observed toxicity could not be related to extractible aluminium concentration as there was no difference between aluminium concentrations extracted from controls and treatments at pH 7.3. There were certain differences between treatment levels such as the addition of CaCO3 which was used to attenuate low soil pH further to aluminium treatment. It is therefore not clear whether the effects found can be directly attributed to aluminium toxicity.
result (mg/kg dw)
Sulfuric acid, aluminium salt (3:2), octadecahydrate (CAS RN 7784-31-8)
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