1,4-Benzenedisulfonic acid, 2,2'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)imino[6-[bis(2-hydroxypropyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis-, sodium salt (1:6)

Short-term toxicity to aquatic invertebrates

Description of key information

The substance CAS 371756-75-1 is with high probability acutely not harmful to daphnids.

Additional information

Several studies are available in order to determine the acute toxicity of substances belonging to the stilbene fluorescent whitening agents category to daphnids. All of those studies demonstrate that the substances belonging to the category are with a high probability acutely not harmful to daphnids. Therefore, reading across, also the substance CAS 371756 -75 -1 is considered with high probability acutely not harmful to daphnids.

CAS 16090-02-1:

Two acute toxicity studies with Daphnia magna point to the fact that the tested substance is not acutely harmful to aquatic invertebrates (Laus 2002, RCC 1988). The chosen key study contains an EC50 value greater than 100 mg/L. This is supported by the result of the RCC 24h-study that states an EC50 value greater than 1000 mg/L.

CAS 4193-55-9:

The EC50 (48h) value of the test substance on daphnids was determined to be greater than 100 mg/L (nominal, CIBA-GEIGY 1996). This result is substantiated by several other short term toxicity studies in the stilbene fluorescent whitening agents category, which the test substance is a part of.

 

CAS 16470-24-9:

The EC50 value of the test substance on daphnids according to OECD 202 was found to be greater than 1000 mg/L (CIBA-GEIGY 1988).

 

CAS 41098-56-0:

In a short-term toxicity study of the test substance on daphnids (48h) no toxic effects occured at the highest test concentration of nominally 100 mg/L (CIBA-GEIGY 2008). Therefore, the test substance is considered not to be harmful to daphnids.