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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Two studies are available in order to assess the acute toxicity to terrestrial macroorganisms on two similar substances of the category of Stilbene Fluorescent Whitening Agents. The two substances are OB 1 -DSA and OB 3a-MSA.Justification for Read Across is given in Section 13 of IUCLID.

The LC50 value inEisenia foetidaaccording to the OECD 207 was greater than 3000 mg/kg dry weight (Solvias AG. 1999) for OB 1 -DSA and greater than 3000 mg/kg dry weight (Solvias AG. 1999) for OB 3a-MSA. From the toxicity point of view, no difference can be established between the two substances since the tests have been conducted at fixed doses with no effects reported.

Hence, toxicity to soil microorganisms is not expected niether for the substance.

According to the REACH Regulation, Annex IX, Column 2 (specific rules for adaptation from Column 1), further soil toxicity testing is not proposed by the registrant because the Chemical Safety Assessment, according to Annex I, does not indicate the need to investigate further effects on soil organisms.