Registration Dossier
Registration Dossier
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EC number: 268-103-5 | CAS number: 68002-88-0 This substance is identified by SDA Substance Name: C16-C22 alkyl carboxylic acid and SDA Reporting Number: 21-005-00.
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
A PNEC is not derived since no adverse effects were observed in acute tests in the range of the water solubility of the test substances.
Key value for chemical safety assessment
Additional information
Studies are available for the pure homologue members of the fatty acid category. In addition some studies are summarized for certain fatty acid mixtures. Generally it could be stated that toxicity of fatty acids to aquatic organisms increases with increasing chain length up to the water solubility limit at a chain length of C12. For longer chains, no effects at saturation are observed. For fatty acids, C16 -22 (CAS 68002 -88 -0), which contains as one of the main constituent C18, read-across is performed to a available for the pure homologue stearic acid (C18 - CAS 57 -11 -4) .
The homologue C18 (stearic acid: CAS 57 -11 -4) was tested on golden orfe (Leuciscus idus) (Richterich and Mühlberg, 2001c). In the static test, which was conducted according to DIN 38412/15, the fish were exposed to different concentrations of the test substance (1000, 3000, 10000 mg/L nominal). In the study no effects on fish were reported, resulting in a LC50 > 10000 mg/L.
Concluding from the result reported for the pure homologues C18 no toxicity within the range of water solubility is expected for the considered fatty acid (CAS 68002 -88 -0).
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