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EC number: 292-883-6 | CAS number: 91002-07-2
One reliable acute toxicity data point (Klimisch 1, GLP) for a fish species -the zebrafish Danio rerio - has been identified. Based on measured total Ba-level in the water column, a 96h-LC50 of is reported by Egeler and Kiefer (2010), using barium dichloride dihydrate as test substance.
One reliable acute toxicity data point (Klimisch 1, GLP) for a fish species -the zebrafish Danio rerio - has been identified. No effect (mortality) was noted at a nominal test concentration of 100 mg Ba2+/L.
Both the dissolved and total fraction was measured. A white substance was noted in the solution upon addition of BaCl2, most likely caused by the formation of the poorly soluble barium sulfate.
However, at a nominal concentration of 100 mg Ba2+/L, the dissolved and total barium concentrations were 3.5 and 97.5 mg/L, respectively.
Translating the latter value to BaCl2, a 96h-LC50of > 147.8 mg BaCl2/L is derived based on total barium concentration in test solution. Nevertheless, re-calculation of the 96h-LC50 of > 3.5 mg dissolved barium/L results in an LC50of > 5.3 mg BaCl2/L.
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