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EC number: 500-465-4
CAS number: 160901-28-0
1 - 2.5 moles ethoxylated
Number of juvenile worms per vessel after 56 days of exposure to the
Texapon N 70[mg a.i./kg sdw]
Number of juvenile wormsper replicate (n=10)
Difference to control[%]
SD = Standard Deviation sdw
= soil dry weight
CV = Coefficient of Variation
NOEC (56 d) = 750 mg a.i./kg soil dw for Eisenia fetida
Since no studies on toxicity to soil organisms are available for
AES (C9-11, 1-2.5EO) Na (CAS 160901-28-0) a read-across approach from a
comparable AES (C12 -14, 2EO) Na (CAS 68891 -38-3) was applied.
In this test the earthworm Eisenia fetida was exposed to different
test concentrations of the AES (C12 -14, 2EO) Na mixture (CAS
68891-38-3). The study was performed according to OECD guideline 222 and
GLP. The NOEC (56 d) for body weight change and reproduction was
determined as 750 mg a.i./kg soil dry weight. Up to the highest test
concentration (750 mg a.i./kg soil dry weight) no mortality was observed
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