Registration Dossier
Registration Dossier
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EC number: 256-851-5 | CAS number: 50925-42-3
Endpoint summary
Administrative data
Description of key information
Direct Yellow 86 is highly soluble in water with a water solubility of 71.33 g/L. The following results provide information on ecotoxicological behavior in the aquatic compartment.
6.1.1 Acute toxicity to fish: No toxic effects against fish were observed under exposure conditions (96hr-LC50 > 100 mg/L). All results are expressed in terms of nominal concentrations.
6.1.3 Acute toxicity to daphnia: No toxic effects against daphnia were observed under exposure conditions (48hr-EC50 > 100 mg/L). The results are expressed in terms of nominal concentrations.
6.1.5 Toxicity to aquatic plants: As Direct Yellow 86 is a coloured substance, the effect of light absorption at standard algae growth inhibition tests has to be considered. Absorption of light at relevant wavelengths may cause an indirect effect on aquatic plant growth by inhibition of photosynthesis. The 7-d Lemna growth test avoids this problem since the fronds grow at the water surface. According to the ECHA Guidance Document (Chapter R.7b, 2017) the Lemna growth test can be chosen for coloured substances. Therefore, the Lemna growth inhibition test (OECD 221) was conducted instead of the standard algae growth inhibition test. No toxic effect (NOEC (growth rate): > 1mg/L, 72hr-ErC50: > 100 mg/L) against Lemna under exposure conditions were observed. The results are expressed in terms of nominal concentrations.
6.1.7 Toxicity to microorganisms: No toxic effects on micororganisms in an activated sludge test were observed as Direct Yellow 86 showed an 3hr-EC50 of higher than 10000 mg/L. Test concentrations are given as nominal concentrations.
All studies were conducted according to national and/or international guidelines. The toxicity studies are classified as acceptable and satisfy the guideline requirements.
Additional information
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