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EC number: 245-711-9 | CAS number: 23519-77-9
No studies were conducted on the target substance, Zirconium tetrapropanolate. As the target substance hydrolyses rapidly (half-life < 5 minutes) the intrinsic properties are related to hydrolysis products of the target substance.
On the basis that if entering the environmental, this substance will quickly dissociate to form the inorganic (poorly soluble) zirconium dioxide and well-evaluated organic substances – 1-propanol.
The zirconium dioxide is not considered further in this report as aquatic toxicity assessments do not apply.
Toxicity of 1-propanol to algae were tested on several species:Selenastrum capricornutum, Scenedesmus pannonicus, andChlorella pyrenoidosa. NOEC (48-96h) based growth rate values were 2000, 2900 and 1150 mg/l respectively. (Slooff et al. 1983). The lowest value of 1150 mg/l tested onChlorella pyrenoidosawere chosen for CSA.
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